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How to access environment variable values?
I set an environment variable that I want to access in my Python application. How do I get its value?
12 Answers
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What's the scope of a variable initialized in an if statement?
I'm new to Python, so this is probably a simple scoping question. The following code in a Python file (module) is confusing me slightly:
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Specify format for input arguments argparse python
I have a python script that requires some command line inputs and I am using argparse for parsing them. I found the documentation a bit confusing and couldn't find a way to check for a format in the input parameters. What I mean by checking format is explained with this example script:
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How can I check if an ip is in a network in Python?
... 192.168.0.1), how do I check if it's in a network (say 192.168.0.0/24) in Python?
27 Answers
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Identifying the dependency relationship for python packages installed with pip
When I do a pip freeze I see large number of Python packages that I didn't explicitly install, e.g.
8 Answers
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SQL DROP TABLE foreign key constraint
...llowed by the tables themselves, using a concatenation trick involving FOR XML PATH('') which allows merging multiple input rows into a single output row. Should work on anything SQL 2005 & later.
I've left the EXECUTE commands commented out for safety.
DECLARE @SQL NVARCHAR(max)
;WITH fkeys...
How to initialize a dict with keys from a list and empty value in Python?
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This is the cleanest, most Pythonic way in Python3 IMO
– Bede Constantinides
Apr 21 '15 at 9:33
5
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Android: How to change the ActionBar “Home” Icon to be something other than the app icon?
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In AndroidManifest.xml:
<application
android:icon="@drawable/launcher"
android:label="@string/app_name"
android:name="com..."
android:theme="@style/Theme">...</Application>
In styles.xml: (See android:icon)
<s...
Build the full path filename in Python
...compatible with the suffix conventions in pathlib, which was introduced in python 3.4 after this question was asked. New code that doesn't require backward compatibility can do this:
suffix = '.pdf'
pathlib.PurePath(dir_name, base_filename + suffix)
You might prefer the shorter Path instead of Pure...
How to use string.replace() in python 3.x
The string.replace() is deprecated on python 3.x. What is the new way of doing this?
8 Answers
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