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Logical operators for boolean indexing in Pandas
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When you say
(a['x']==1) and (a['y']==10)
You are implicitly asking Python to convert (a['x']==1) and (a['y']==10) to boolean values.
NumPy arrays (of length greater than 1) and Pandas objects such as Series do not have a boolean value -- in other words, they raise
ValueError: The truth v...
Git add and commit in one command
...verted back to ticks ('), as otherwise it will fail for shell expansion on Linux. On Windows, one should use double-quotes (") instead (pointed out in the comments, did not verify).
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How to create a density plot in matplotlib?
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@Justin Nice answer (+1) and not wanting to start any Python v R flame wars or anything, but I am loving the way R works with data much more succinctly that python and other languages. I'm sure python has lots of good points over R (I'm not a Python user so I'm so totally unifor...
Convert MySQL to SQlite [closed]
...c database differences away for you. e.g. you get these in PHP (RedBean), Python (Django's ORM layer, Storm, SqlAlchemy), Ruby on Rails (ActiveRecord), Cocoa (CoreData) etc.
i.e. you could do this:
Load data from source database using the ORM class.
Store data in memory or serialize to disk.
Sto...
AttributeError: 'module' object has no attribute
I have two python modules:
14 Answers
14
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Python try-else
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There's no such thing as a "try-scoped variable". In Python, variable scopes are established only by modules, functions and comprehensions, not control structures.
– mhsmith
Apr 11 '15 at 12:59
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How do I package a python application to make it pip-installable?
...ble app
And here's another good, detailed overview that helped me a lot:
Python Packaging User Guide
Especially the tips to get your static files (templates) included are important as this might not be obvious at first.
And yes, you can specify required packages in your setup.py which are automa...
Google Authenticator implementation in Python
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for python 3: change: ord(h[19]) & 15 into : o = h[19] & 15 Thanks BTW
– Orville
Apr 18 '19 at 12:04
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How to remove leading and trailing zeros in a string? Python
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Not the answer you're looking for? Browse other questions tagged python string trailing chomp leading-zero or ask your own question.
Node.js quick file server (static files over HTTP)
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I know it's not Node, but I've used Python's SimpleHTTPServer:
python -m SimpleHTTPServer [port]
It works well and comes with Python.
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