Python Blob To String

Datacamp provides online interactive courses that combine interactive coding challenges with videos from top instructors in the field. Since SQLite strings do not normally contain NUL characters, the length(X) function will usually return the total number of characters in the string X. C# Corner Q3, 2019 MVPs Announced We are happy to announce C# Corner MVPs for the third quarter of year 2019. Some versions of Python may manage to avoid O(n^2) behaviour here but any of the other answers that have been given are better than this. Join GitHub today. They are extracted from open source Python projects. [code]def upload_blob(bucket_name, source_file_name. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. -- create_function_blob2string. Put the raw Base64 string into the textarea, select the type of the image (JPEG,PNG,GIF) and push the "Decode" button. Python, Sqlite - how to put on an image stored (either as Blob or base64 string) in a sqlite DB on a tkinter Label. There are many different explanations about what __str__ and __repr__ are each used for. Azure resources are helpful for building automation scripts. Hello Buddies, I have written a string into database by converting into "BLOB Data Type". Eve, I can read the individual files across, However, the question is how to mount the blob to the file system. Python's text-read functions usually normalize line endings so that strings use only \n. Type Conversions. Contribute to python/cpython development by creating an account on GitHub. Finally, we download our target file with download_to_filename(). SQL Server >. You can raise or lower this value at compile-time using a command-line option like this: -DSQLITE_MAX_LENGTH=123456789. Calling Stored Procedures in Python - show you how to call MySQL stored procedures in Python using MySQL Connector/Python API. From the samples GoogleCloudPlatform/python-docs-samples you need to import the google cloud storage libraries. How to convert a String to an InputStream object in Java? How to find the unicode category for a given character in Java? How to print a formatted text using printf() method in Java? How to find the number of days in a month of a particular year in Java? Importance of deepToString() and asList() methods in Java? A Boolean Array Puzzle in C?. but basic question is how to convert BLOB to RAW/VARCHAR2 data type. I passed the blob as a text field in a form and submitted. Variables are an important part of any program or script. You can vote up the examples you like or vote down the ones you don't like. They are extracted from open source Python projects. Login with Salesforce. Rasterize vector to PNG. find(str, beg=0, end=len(string)) Parameters. Python generates dynamic JSON string and received by the client. text (str) – Text to upload to the blob. Blob CloudBlobContainer. This can be read has: in the first 50 rows of hivesampletable table, select clientid, devicemake, devicemodel , pass them to the simple_sample. Loops which have a string += line should be avoided. As a first step, get familiar with the basic concepts of Oracle-Python connectivity. This tree contains three Blob objects and one Tree object. glob (pathname) ¶ Return a possibly-empty list of path names that match pathname, which must be a string containing a path specification. Lines normally contain 45 (binary) bytes, except for the. If/Else - If/Else control structures. I write a apex class to import csv file from the VF page. You will learn how to pass a request from NGINX to proxied servers over different protocols, modify client request headers that are sent to the proxied server, and configure buffering of responses coming from the proxied servers. If you do not have access to the PHP. WindowsAzure. Python: Converting string to bytes object In this post, we will check how to convert a Python string to a bytes object. MySQL supports BLOB datatype using TINYBLOB, BLOB, MEDIUMBLOB and, LONGBLOB. Both solution will work for small files. The connect() function returns a new instance of the connection class. They are extracted from open source Python projects. Thanks for sharing your solution here, from my research, Azure storage is not natively support move, so your solution is a good choice, when you delete blob, please ensure the blob has been copied to another container. You can raise or lower this value at compile-time using a command-line option like this: -DSQLITE_MAX_LENGTH=123456789. 0-preview" NuGet package Applying the ModelCommand pattern I was able to create a command that enables us to upload a serializable object as JSON and store it in an existing Blob Container. ) and the actual data in a separate file in the filesystem (or maybe in a "db" database (BDB, GDBM), if you really like them). beacuse right now i am passing from powerbuilder application blob variable and when i am using this UTL_RAW. Menu Connecting Python application to Azure Database for PostgreSQL 10 May 2017 on Python, PostgreSQL, Azure SQL Database, Azure. // Raw string is the default if no format is provided var message = 'This is my message. I want to avoid parsing names. encoding (str) - Python encoding to use when decoding the blob data. These are generic categories, and various backing stores can be used for each of them. Introduction As usual, these notes are primarily for myself. Contribute to python/cpython development by creating an account on GitHub. Download 100% FREE Office Document APIs for. If you do not have access to the PHP. accountName, accountKey := accountInfo() // Use your Storage account's name and key to create a credential object; this is used to access your account. a2b_base64 (string) ¶ Convert a block of base64 data back to binary and return the binary data. To prepare binary data values for transmission, pack them into a buffer with struct. A second string called catcher has been created and it contains the first sentence of The Catcher in the Rye. Azure Storage SDK for Python. Python backup script. It provides a simple API for diving into common natural language processing (NLP) tasks such as part-of-speech tagging, noun phrase extraction, sentiment analysis, classification, translation, and more. Java), we can also convert an image to a string representation in Python. py Find file Copy path zezha-msft Fixed unintended non-ASCII char in docs 8f10e92 Aug 2, 2019. Welcome to part 16 of the intermediate Python programming tutorial series. Struct Class¶. Currently I am able to list all files with URL but I just need list of names. mistune Converts Documents¶. Generally, a number is said to be. Summary: this tutorial shows you step by step how to update and select the BLOB from an SQLite database. py); layer refers to the name of your class; You can pass parameters to the layer using param_str (more on accessing them bellow);. Meet new friends around the World on ExpireBox, the Original Community Chat. As you can see below I am using the EMPTY_BLOB() to successfully create a record. [2015/05/13] The code in this post has been updated to work with the "Windows Azure Storage 4. blob: Byte string:. start_range (int) - Start of byte range to use for downloading a section of the blob. You routinely have to deal with string/list quoting and constructing complex data structures is tricky if they have to be represented with just strings and hashes. Block blobs are the most commonly used, and that is what is used in this quickstart. but basic question is how to convert BLOB to RAW/VARCHAR2 data type. struct — Interpret strings as packed binary data¶. Also includes basic dunder and string methods for making objects like Python strings. How to Handle Blob Data Contained in an XML File If an EC2 log records events in XML format, then every XML event will record EC2-related information as a base64 string. To save memory or bandwidth it’s better to send the minified version of JSON text. Finally, we download our target file with download_to_filename(). If X is numeric then length(X) returns the length of a string representation of X. If the Base64 string is a valid image it will be displayed in full size. Currently the routine waits for a file in the inbox ( incomin file directory ) directory and creates a record in the table with blob fields. This project provides a client library in Python that makes it easy to consume Microsoft Azure Storage services. First, we just need to consider the steps to implement the. If trace `hoverinfo` contains a "text" flag and "hovertext" is not set, these elements will be seen in the hover labels. To access a value in a python dictionary, you use the square brackets after the variable name, as the following example describes:. Python: Convert Image to String, Convert String to Image To store or transfer an image, we often need to convert an image to a string in such a way that the string represents the image. Ivan Voras It is generally NOT a good idea to write large binary strings to a (sql relational) database, even if it has blobs. When deciding whether to ignore a path, Git normally checks gitignore patterns from multiple sources, with the following order of precedence, from highest to lowest (within one level of precedence, the last matching pattern decides the outcome):. I want to avoid parsing names. The Unicode type is a String subclass that assumes input and output as Python unicode data, and in that regard is equivalent to the usage of the convert_unicode flag with the String type. It needs to know whether the entire set of bytes represets characters or if it is a sequence of 4-byte integers. log('Uploaded a raw string!');. Azure Blob Storage. The following are code examples for showing how to use cx_Oracle. The bytes type in Python is immutable and stores a sequence of values ranging from 0-255 (8-bits). Within your storage account, containers provide a way to organize sets of blobs. Now, we need to pass this image to a 3rd party application (document mgt. 0-preview" NuGet package Applying the ModelCommand pattern I was able to create a command that enables us to upload a serializable object as JSON and store it in an existing Blob Container. Python Overview Python Built-in Functions Python String Methods Python List Methods Python Dictionary Methods Python Tuple Methods Python Set Methods Python File Methods Python Keywords Module Reference Random Module Requests Module Python How To Remove List Duplicates Reverse a String Python Examples Python Examples Python Exercises Python. Contribute Code or Provide Feedback:¶ If you would like to become an active contributor to this project, please follow the instructions provided in Microsoft Azure Projects Contribution Guidelines. The problem is that a blob can hold megabytes of data. So, you can transform and play with it same like we did in python. If your application uses Redis, it’ll work as-is with Azure Cache for Redis. The Blob service stores text and binary data as blobs in the cloud. In the question "What’s the company’s policy on using internally-issued certificates and/or wildcard certificates? " you recommend using separate set of SSL certificates for edge WAP/Proxy servers. Datacamp has beginner to advanced Python training that programmers of all levels benefit from. Opening a File in Python. Is it better to have many small Azure storage blob containers (each with some blobs) or one really large container with tons of blobs? Downloading Azure Blob files in MVC3; Differences between Azure Block Blob and Page Blob? What is the best way to backup Azure Blob Storage contents. Join GitHub today. This guide to appended blob storage in Microsoft Azure covers the BlockBlob, append, and PutBlock methods, as well as their strengths and drawbacks. There are three main types of I/O: text I/O, binary I/O and raw I/O. GitHub Gist: instantly share code, notes, and snippets. The imageMode() function can be used to change the way these parameters draw the image. beacuse right now i am passing from powerbuilder application blob variable and when i am using this UTL_RAW. Next, create a new cursor object by calling the cursor() method of the connection object. Put the raw Base64 string into the textarea, select the type of the image (JPEG,PNG,GIF) and push the "Decode" button. This article provides information on how to display a GIF image stored in the Microsoft SQL Server sample database table pub_info. Summary: this tutorial shows you step by step how to update and select the BLOB from an SQLite database. The response property will contain the entity body according to responseType, as an ArrayBuffer, Blob, Document, JSON, or string. 0: This release, the first to require Python 3, integrates the Jedi library for completion. In this way, you can systematically vary the query based on various arguments passed to the function. DownloadToStreamAsync extracted from open source projects. what I need to program in the python code and what I need to use for module. Python: Convert Image to String, Convert String to Image To store or transfer an image, we often need to convert an image to a string in such a way that the string represents the image. Is there any way to either prevent this from happening, i. MDN will be in maintenance mode on Wednesday October 2, from 5 PM to 8 PM Pacific (in UTC, Thursday October 3, Midnight to 3 AM) while we upgrade our. Type Conversions. Both of them string-fields. Welcome to part 16 of the intermediate Python programming tutorial series. The connect() function returns a new instance of the connection class. Note: The ImageData object is not a picture, it specifies a part (rectangle) on the canvas, and holds information of every pixel inside that rectangle. name come into play when setting our blob's filename. Hi Saraz, Again I cannot confirm on the data that is present in your file. 5/Makefile) or relative (like. 0 is highly recommended for use with MySQL Server 8. It uses the MySQLdb module. GitHub Gist: instantly share code, notes, and snippets. Recall in the beginning of this series that I proclaimed that intermediate programming was: Maintainable Scale-able Modular So far, we. what I need to program in the python code and what I need to use for module. Python MySQL Query. Python: Converting string to bytes object In this post, we will check how to convert a Python string to a bytes object. Currently I am able to list all files with URL but I just need list of names. The closeness of a match is often measured in terms of edit distance, which is the number of primitive operations necessary to convert the string into an exact match. One room for improvement is definitely support for naming Blob outputs, as well as being able to output more than one Blob object or Queue message. Trees below the root have additional attributes. emoji_short_codes¶ Dict of all emoji as emoji_data_python. Since SQLite strings do not normally contain NUL characters, the length(X) function will usually return the total number of characters in the string X. BLOB — Long sequence of binary numbers. The images are satellite. This will involve reading metadata from the DICOM files and the pixel-data itself. Figure 10, how to create an Azure Function with a Cosmos DB trigger. Redis is a different evolution path in the key-value DBs where values can contain more complex data types, with atomic operations defined on those data types. declarative import declarative_base from sqlalchemy. You can vote up the examples you like or vote down the ones you don't like. I passed the blob as a text field in a form and submitted. Pandas understands a string of python 'bytes' to be an 'object' type, which is the same for a regular string. The fact that "everything is a string" is cute and odd but the end result is really closer to shell scripting than a real object-oriented language like Python. Data too long for column 'blob_file_COL' at row 1. [code]def upload_blob(bucket_name, source_file_name. Menu Connecting Python application to Azure Database for PostgreSQL 10 May 2017 on Python, PostgreSQL, Azure SQL Database, Azure. Summary: this tutorial shows you step by step how to update and select the BLOB from an SQLite database. storage-blob-python-getting-started / blob_advanced_samples. Lists & Maps - Using lists and maps (dictionaries). pathname can be either absolute (like /usr/src/Python-1. Each network layer has unique integer id and unique string name inside its network. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. It took us a while to figure it out and ran into a bunch of issues. Congratulations to all members. ByteStrings are indexed by the datastore, and can be used in filters and sort orders. You can vote up the examples you like or vote down the ones you don't like. PostgreSQL Python: Handling BLOB Data Summary : in this tutorial, you will learn how to handle PostgreSQL BLOB data in Python using the psycopg database adapter. The Python string is not one of those things, and in fact it is probably what changed most drastically. Open the IDLE text editor that comes with the Python programming language. Both solution will work for small files. C# (CSharp) Microsoft. I used this SQL to create a function. How to use SQL databases in python without writing. Working with BLOB data. *FAQ *Why is Redis different compared to other key-value stores? There are two main reasons. A BLOB is a binary large object that can hold a variable amount of data with a maximum length of 65535 characters. Reading BLOB data from MySQL database. a2b_base64 (string) ¶ Convert a block of base64 data back to binary and return the binary data. PostgreSQL Python: Handling BLOB Data Summary : in this tutorial, you will learn how to handle PostgreSQL BLOB data in Python using the psycopg database adapter. Blob class takes a str value as an argument to its constructor, or you can. py python script that can be run with D:\Python27\python. One room for improvement is definitely support for naming Blob outputs, as well as being able to output more than one Blob object or Queue message. NET, Perl, Java, C, C++, Ruby and many more, see the Wikipedia article Comparison Of Programming Languages (String Functions). Declaratively configure an outbound action to store that file into the blob storage container configured in Lab 1. // Say here I only know one way to cast a string to a blob and that is // using Blob. Python doesn't have any separate data type for characters so they are represented as a single character string. encodestring() returns a string containing one or more lines of base64-encoded data always including an extra trailing newline ('\n'). 2017-01-09 python怎么把int转换成string; 2017-12-16 python怎么将numpy类转为string类? 2018-09-20 python 如何转换成string; 2012-04-13 BLOB类型能转换成String类型的吗? 2013-04-25 ORACLE数据库BLOB如何转化类型; 2014-10-27 怎么把String 类型转换成Blob类型. C# (CSharp) Microsoft. The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers. Textblob object to string #89. 16 uint8 is stored as an array of string with one element. To work with JSON formatted data in python, we will use the integrated python json module. It is named scandir(), and significantly simplifies the call to list files in a directory. glob (pathname) ¶ Return a possibly-empty list of path names that match pathname, which must be a string containing a path specification. azurepython3 is a Python 3. Upload blobs to the container. Among the core principles of Python's way of doing things there is a rule about having high-level interfaces to APIs. You can vote up the examples you like or vote down the ones you don't like. In this example we are going to insert two users in the database, their information is stored in python variables. Demonstrates the simplest possible upload to Azure Storage. A free test data generator and API mocking tool - Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software. The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers. Encoding/decoding strings in Python 3. (Changelog)TextBlob is a Python (2 and 3) library for processing textual data. Download 100% FREE Office Document APIs for. read()) work or is. It seems a very straight-forward advice, but in reality that's not always the case. Note: This limitation has been removed in SQLITE 3. Using Active Server Pages (ASP), you can view images stored in BLOB (Binary Large Object) fields in your Internet browser. x, are always Unicode. See the release notes for more information about what’s new. x Save Tweet Share In Python 3. Will xmlrpclib. The spaces between the format. It also assumes that you know how to build an App Engine application, as described in the Quickstart for Python 2 App Engine standard environment. Release v0. blob_name (str) – Name of blob to create or update. Encoding/decoding strings in Python 3. In other words, is there anything to stop you simply writing "result4[a][9]" directly into a file? # stuff leading up to: blob = result4[a][9] ofile = open ("temp. This is null if the request is not complete or was not successful. lob的一种类型,以二进制方式进行存储. If you want to create a block blob by uploading a file from the. When you read a BLOB from MySQLdb, you do not get a string. The BLOB column contains alphanumeric characters. In Python, BLOB fields can accept strings, bytearray, and memoryviews. Use fetchone () , fetchmany () or fetchall () method to fetch data from the result set. This client program encodes an integer, a string of two characters, and a floating point value into a sequence of bytes that can be passed to the socket for transmission. When deciding whether to ignore a path, Git normally checks gitignore patterns from multiple sources, with the following order of precedence, from highest to lowest (within one level of precedence, the last matching pattern decides the outcome):. (Changelog)TextBlob is a Python (2 and 3) library for processing textual data. Retrieving & Updating BLOB in MySQL Database - show you how to work with MySQL BLOB data in Python, with examples of updating and reading BLOB data. join(iterable) method, except returns a blob object. For documentation please see the Microsoft Azure Python Developer Center and our API Reference (also available on readthedocs). What we want to achieve in this tutorial is to create simple REST API (written in Python) which connects to PostgreSQL running as a service on Microsoft Azure cloud. Blob storage is optimized for storing massive amounts of unstructured data, such as text or binary data. How to Rename a blob on Azure I came across something today that I think it is good to share, blob names are case-sensitive in windows Azure. Early on, other packages still used strings for file paths, but as of Python 3. Python: Converting string to bytes object In this post, we will check how to convert a Python string to a bytes object. Contribute to python/cpython development by creating an account on GitHub. making sure the field type is 'Text', or is there a way of reading the text in python so the data can be used?. From the samples GoogleCloudPlatform/python-docs-samples you need to import the google cloud storage libraries. Performing String and Bytes Data Conversion in Python3. In the question "What’s the company’s policy on using internally-issued certificates and/or wildcard certificates? " you recommend using separate set of SSL certificates for edge WAP/Proxy servers. WindowsAzure. The Blob service stores text and binary data as blobs in the cloud. Python mentions the following regarding this function: Encode the string s, which can contain arbitrary binary data, and return a string containing one or more lines of base64-encoded data. I Have an oracle database with a table have a blob field have images store in it how I can export these images stored in blob field back to a file in a folder on the computers harddisk I have oracle 11g and pl/sql developr 8. Trying to cram either form into a string will corrupt the data and render the file useless. If the destination blob already exists, it must be of the same blob type as the source blob. If you receive binary data from a Windows system, Python does not have a chance to do that. Workspace is a key component of Caffe2 while CNNModelHelper is useful in quickly creating CNNs. Single and double quoted strings are same and you can use a single quote within a string when it is surrounded by double quote and vice versa. 0-preview" NuGet package Applying the ModelCommand pattern I was able to create a command that enables us to upload a serializable object as JSON and store it in an existing Blob Container. Writing a Python Query. RASTER — Raster images. If you are stuck on legacy Python, there is also a backport available for Python 2. The response property will contain the entity body according to responseType, as an ArrayBuffer, Blob, Document, JSON, or string. Perl, PHP, Python & Ruby Development (1979) Visual Workflow (1897) Chatter and Chatter API Development (1627) Converting Blob to String. Try, this might help in your case, change it to LONGBLOB which can hold large data BLOB - maximum length of 65535 characters MEDIUMBLOB - maximum length of 16777215 characters LONGBLOB - maximum length of 4294967295 characters. ByteStrings are indexed by the datastore, and can be used in filters and sort orders. Datacamp has beginner to advanced Python training that programmers of all levels benefit from. MakeTableView_management the field is given the type 'BLOB'. Currently the routine waits for a file in the inbox ( incomin file directory ) directory and creates a record in the table with blob fields. More than one line may be passed at a time. Without doubt, there is small learning curve to using Azure Functions with Python, but after a few Functions, it'll be an easy play. Storage SDK packages for Blob, File, and Queue in Python are available on PyPi with version 1. js Explore Channels Plugins & Tools Pro Login About Us. how to store binary file data to a database blob. A Python decorator is a specific change to the Python syntax that allows us to more conveniently alter functions and methods (and possibly classes in a future version). In other words, is there anything to stop you simply writing "result4[a][9]" directly into a file? # stuff leading up to: blob = result4[a][9] ofile = open ("temp. Put the raw Base64 string into the textarea, select the type of the image (JPEG,PNG,GIF) and push the "Decode" button. Next, create a new cursor object by calling the cursor() method of the connection object. Loops which have a string += line should be avoided. I am trying to insert string into BLOB column using sqlite3 in Python. The BLOB column contains alphanumeric characters. Output< string | undefined >; Allows specifying the name of a node to sort results near using Consul’s distance sorting and network coordinates. If an item that has the same primary key as the new item already exists in the specified table, the new item completely replaces the existing item. If/Else - If/Else control structures. snapshot (str) - The snapshot parameter is an opaque DateTime value that, when present, specifies the blob snapshot to retrieve. Syntax str. Python mentions the following regarding this function: Encode the string s, which can contain arbitrary binary data, and return a string containing one or more lines of base64-encoded data. DS_Store files directly from Python, with no Mac OS X specific code involved. When deciding whether to ignore a path, Git normally checks gitignore patterns from multiple sources, with the following order of precedence, from highest to lowest (within one level of precedence, the last matching pattern decides the outcome):. A free test data generator and API mocking tool - Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software. More than a HOWTO, this document is a HOW-DO-I use Python to do my image processing tasks. Generally, a number is said to be. The first function that you need to know is open(). The client to use. You can vote up the examples you like or vote down the ones you don't like. Perl, PHP, Python & Ruby Development (1979) Visual Workflow (1897) Chatter and Chatter API Development (1627) Converting Blob to String. 09/11/2019; 6 minutes to read +13; In this article. For best operation in large tables, the SQLITE author recommends keeping the row size around 250 bytes or below. 3, Hibernate 5. In this tutorial, we're going to cover two new special methods: __str__ and __repr__. but basic question is how to convert BLOB to RAW/VARCHAR2 data type. py file contains the typical imports used for accessing Cloud Storage via the client library:. For non-prepared statements, Python types are cast to CQL literals in the following way:. *FAQ *Why is Redis different compared to other key-value stores? There are two main reasons. Hello, I need to convert a BLOB to a string, in order to select parts of it. Introduction - The basics of python programming. If a Blob, File, or Uint8Array isn't available, you can use the putString() method to upload a raw, base64, base64url, or data_url encoded string to Cloud Storage. This is useful in the scenario when you know that the blob exist in storage and would want to find out the type of blob - Block Blob or Page Blob. if an emoji has a secondary short name that is already taken as primary for an other emoji, this will. looking at the source on github, it looks fixed. Contribute Code or Provide Feedback:¶ If you would like to become an active contributor to this project, please follow the instructions provided in Microsoft Azure Projects Contribution Guidelines. The process of reading BLOB data from the database is similar to the process of writing BLOB except for the part that we write BLOB data into the file. Conversion dataUri string to Blob: dataUri2Blob. The examples in this post were updated in September to work with the current version of the Windows Azure Storage REST API. Note: The maximum size of a block blob created by uploading in a single step is 64MB. This tutorial explains simple blob detection using OpenCV. RASTER — Raster images. Convert String To Blob Angular 2. Never use string operations or concatenation to make your queries because is very insecure. The default is None, for which the standard Base64 alphabet is used. -- create_function_blob2string. Azure Blob Storage. If you want to create a block blob by uploading a file from the. Microsoft Azure Storage SDK for Python. This is a snippet for the code that I want to do Blob to Base64 string:. [2015/05/13] The code in this post has been updated to work with the "Windows Azure Storage 4. In this article we will discuss how to convert a list to string. Read a CSV Blob file in Azure Azure Blob storage is a service for storing large amounts of unstructured data. Variables are an important part of any program or script. In the end, and as Jerome quite rightly points out, I decided to place the images in a seperate folder due to my SQL Server 2000 account - the host charges me per 150MB clip. CloudBlockBlob. Each line in a gitignore file specifies a pattern. They are extracted from open source Python projects.