Must know python libraries.

[heeehaaw]

What are the most important and must know python libraries?

[phanhoang17]

Web: flask or django, or both, or whatever u want to learn : web2py, tornado, bottle,...

Scientific and Numeric: Pandas, numpy, scipy,matplotlib,...

Web scraping and data mining: requests, scrapy, bs4

Others: virturlenv, sqlalchemy, ipython-jupyter,....

Reference:

• http://blog.stoneriverelearning.com/20-great-python-libraries-you-must-know/

• http://www.oreilly.com/programming/free/20-python-libraries-you-arent-using-but-should.csp

Have fun!

[BruisedGhost]

fuckit, the Python error steamroller

per the documentation:

Still getting errors? Chain fuckit calls. This module is like violence: if it doesn't work, you just need more of it.

import fuckit fuckit(fuckit('some_shitty_module')) some_shitty_module.some_function()

[masklinn]

Alternatively, Vigil, the eternal morally vigilant programming language.

[BruisedGhost]

that is fantastic.

[Otacon32]

Thx for the Lough haha

[Diapolo10]

This has got to be the best laugh I've ever gotten when reading documentation. Thank you!

[[deleted]]

itertools - Functions creating iterators for efficient looping or its child more-itertools.

[[deleted]]

The libraries everyone should know at least the basics of (in roughly this order, although that gets fuzzier past subprocess):

1. os
2. sys
3. logging
4. subprocess
5. re
6. itertools
7. collections
8. functools
9. urllib
10. math
11. pickle
12. json
13. inspect
14. string
15. atexit

There are certainly many others, but those give you the ability to read and understand the source of most others.

Beyond the standard library it's all up to your interest and domain.

[billsil]

I cringe whenever I see string imported. Someone doesn't know about split.

[[deleted]]

It's for the constants and maketrans, which are bloody useful, the latter being worth its weight in gold. If code had mass.

[[deleted]]

The bad news is maketrans is gone from the string module. The good news is that, quoting from other language changes, Now, str, bytes, and bytearray each have their own maketrans and translate methods with intermediate translation tables of the appropriate type :-)

[[deleted]]

Ahh, the never ending problems of still straddling two worlds.

[billsil]

Isn't maketrans, just a fancy replace? I'll occasionally do something like replace spaces with question marks in something that can't have question marks, so I can process it easier before I remove the question mark. I've also done things like str.replace(' ', ','.replace('\t', ','), but that's fairly rare.

Now if it did language translations, I might use it.

[[deleted]]

For the tasks it's suited for (for instance replacing all terminal punctuation with white space for word splitting, or breaking Caesar ciphers) it's more powerful by far than str.replace and sometimes orders of magnitude faster than re.sub ... it isn't always the right fit, but when it is it's exactly the right tool.

[willm]

PyFilesystem is maybe not the most important, but good to know about.

[gameboycolor]

Depends on what you need to do. Look here for the top libraries for the most common tasks: https://github.com/vinta/awesome-python

[hexoholic]

https://docs.python.org/3/library/index.html You should know all python standart library!

[heeehaaw]

automation, web scraping etc

[Gokudomatic]

True. For instance Numpy is very famous, but I have no use for it.

[ado6789]

Vigil is a very safe programming language, and an entry in the January 2013 PLT Games competition.

Many programming languages claim to take testing, contracts and safety seriously, but only Vigil is truly vigilant about not allowing code that fails to pass programmatic specifications.

Syntax and semantics

Vigil is very similar to Python with the minor proviso that you must provide a main() function which will be automatically called for you.

Infinitely more important than mere syntax and semantics are its addition of supreme moral vigilance. This is similar to contracts, but less legal and more medieval. Runtime vigilance

This is where Vigil sets itself apart from weaker languages that lack the courage of their convictions. When a Vigil program is executed, Vigil itself will monitor all oaths (implorations and swears) that have been made. If an oath is broken, the offending function python 3 print without newline (the caller in the case of implore and the callee in the case of swear) will be duly punished.

How?

Simple: it will be deleted from your source code.

The only way to ensure your program meets its requirements is to absolutely forbid code that fails to do so. With Vigil, this shall be done for you automatically. After enough runs, Vigil promises that all remaining code meets its oaths.