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Reading and writing environment variables in Python? [duplicate]
My python script which calls many python functions and shell scripts. I want to set a environment variable in Python (main calling function) and all the daughter processes including the shell scripts to see the environmental variable set.
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Set up Python simpleHTTPserver on Windows [duplicate]
I want to set up Python SimpleHTTPServer on Windows XP. I have Python installed on my computer. I am executing the following command:
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Why does Python print unicode characters when the default encoding is ASCII?
From the Python 2.6 shell:
6 Answers
6
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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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Saving an Object (Data persistence)
..., just change the import statement to this:
import cPickle as pickle
In Python 3, cPickle was renamed _pickle, but doing this is no longer necessary since the pickle module now does it automatically—see What difference between pickle and _pickle in python 3?.
The rundown is you could use somet...
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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Is there a 'foreach' function in Python 3?
...occurence of "foreach" I've seen (PHP, C#, ...) does basically the same as pythons "for" statement.
These are more or less equivalent:
// PHP:
foreach ($array as $val) {
print($val);
}
// C#
foreach (String val in array) {
console.writeline(val);
}
// Python
for val in array:
print(v...
What is __main__.py?
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Often, a Python program is run by naming a .py file on the command line:
$ python my_program.py
You can also create a directory or zipfile full of code, and include a __main__.py. Then you can simply name the directory or zipfile ...
How to parse/read a YAML file into a Python object? [duplicate]
How to parse/read a YAML file into a Python object?
3 Answers
3
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Using python's eval() vs. ast.literal_eval()?
... of eval.
ast.literal_eval raises an exception if the input isn't a valid Python datatype, so the code won't be executed if it's not.
Use ast.literal_eval whenever you need eval. You shouldn't usually evaluate literal Python statements.
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