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“ValueError: zero length field name in format” error in Python 3.0,3.1,3.2
I'm trying learn Python (3 to be more specific) and I'm getting this error:
3 Answers
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Why does Python use 'magic methods'?
I've been playing around with Python recently, and one thing I'm finding a bit odd is the extensive use of 'magic methods', e.g. to make its length available, an object implements a method, def __len__(self) , and then it is called when you write len(obj) .
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What does Ruby have that Python doesn't, and vice versa?
There is a lot of discussions of Python vs Ruby, and I all find them completely unhelpful, because they all turn around why feature X sucks in language Y, or that claim language Y doesn't have X, although in fact it does. I also know exactly why I prefer Python, but that's also subjective, and would...
How to check if type of a variable is string?
Is there a way to check if the type of a variable in python is a string , like:
20 Answers
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Representing Directory & File Structure in Markdown Syntax [closed]
...tandard tree output will not be printed if your're using pandoc to produce pdf.
tree --dirsfirst --charset=ascii /path/to/directory will produce a nice ASCII tree that can be integrated into your document like this:
.. code::
.
|-- ContentStore
| |-- de-DE
| | |-- art.mshc
| | |-- artnol...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
Python has at least six ways of formatting a string:
5 Answers
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How do I lowercase a string in Python?
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How to convert string to lowercase in Python?
Is there any way to convert an entire user inputted string from uppercase, or even part uppercase to lowercase?
E.g. Kilometers --> kilometers
The canonical Pythonic way of doing this is
>>> 'Kilometers'....
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...lot about the PyPy project. They claim it is 6.3 times faster than the CPython interpreter on their site .
12 Answers
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How to check if variable is string with python 2 and 3 compatibility
I'm aware that I can use: isinstance(x, str) in python-3.x but I need to check if something is a string in python-2.x as well. Will isinstance(x, str) work as expected in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
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No module named setuptools
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Install setuptools and try again.
try command:
sudo apt-get install -y python-setuptools
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