pydemo | Get Productive with Python and Visual Studio Code | Code Editor library

by qubitron Python Version: Current License: No License

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kandi X-RAY | pydemo Summary

pydemo is a Python library typically used in Editor, Code Editor, Visual Studio Code, Docker applications. pydemo has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

This repo contains code and links for the "Get Productive with Python and Visual Studio Code" talk. If you want to give the talk yourself, run the setup.py setup script (using python3) to check out and initialize code repos & snippets, and run the reset.py script that resets the code back to the start of the demo (useful when practicing!). These scripts will only work on macOS and Windows.

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pydemo has a low active ecosystem.

It has 89 star(s) with 17 fork(s). There are 10 watchers for this library.

It had no major release in the last 6 months.

pydemo has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of pydemo is current.

Quality

pydemo has no bugs reported.

Security

pydemo has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

pydemo does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

pydemo releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Top functions reviewed by kandi - BETA

kandi has reviewed pydemo and discovered the below as its top functions. This is intended to give you an instant insight into pydemo implemented functionality, and help decide if they suit your requirements.

Run Python interpreter
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Get all kandi verified functions for this library.

pydemo Key Features

No Key Features are available at this moment for pydemo.

pydemo Examples and Code Snippets

No Code Snippets are available at this moment for pydemo.

Community Discussions

Trending Discussions on pydemo

Can getline() be used multiple times within a loop? - Cython, file reading

QUESTION

Can getline() be used multiple times within a loop? - Cython, file reading

Asked 2021-May-25 at 14:19

I want to read a file, 4 lines by 4 (it's a fastq file, with DNA sequences).
When I read the file one line by one or two by two, there's no issues, but when I read 3 or 4 lines at once, my code crashes (kernel appeared to have died on jupyter notebook). (Uncommenting the last part, or any 3 out of the 4 getline().
I tried with a double array of char (char**) to store the lines, with the same issue.

Any idea what can be the cause ?

Using Python 3.7.3, Cython 0.29, all other libraries updated. File being read is about 1.3GB, machine has 8GB, ubuntu 16.04. Code adapted from https://gist.github.com/pydemo/0b85bd5d1c017f6873422e02aeb9618a

...

ANSWER

Answered 2021-Apr-26 at 11:27

The underlying problem was my misunderstanding of getline() getline() c reference

To store lines in different variables, an associated n is necessary for each line pointer *lineptr.

If *lineptr is set to NULL and *n is set 0 before the call, then getline() will allocate a buffer for storing the line.

Alternatively, before calling getline(), *lineptr can contain a pointer to a malloc(3)-allocated buffer *n bytes in size. If the buffer is not large enough to hold the line, getline() resizes it with realloc(3), updating *lineptr and *n as necessary.

The n (or seed in my code) will hold the size of the buffer allocated for the pointer, where getline() puts the incoming line. As I set the same buffer variable for different pointers, getline was given the wrong information of the size of the char* line_xxx.

As fastq files are usually in this shape:

Source https://stackoverflow.com/questions/67257960

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install pydemo

You can download it from GitHub.
You can use pydemo like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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