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Exit codes in Python
...ou can check the special variable $? for the last exit status:
me@mini:~$ python -c ""; echo $?
0
me@mini:~$ python -c "import sys; sys.exit(0)"; echo $?
0
me@mini:~$ python -c "import sys; sys.exit(43)"; echo $?
43
Personally I try to use the exit codes I find in /usr/include/asm-generic/errno.h...
How do I check if a string is valid JSON in Python?
In Python, is there a way to check if a string is valid JSON before trying to parse it?
4 Answers
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Python: Select subset from list based on index set
...Edit: The first option is equivalent to itertools.compress available since Python 2.7/3.1. See @Gary Kerr's answer.
property_asel = list(itertools.compress(property_a, good_objects))
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impro...
Using Python's os.path, how do I go up one directory?
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@OriolNieto Yes, as of version Python 3.4+ you can use pathlib.Path.parents[levels_up-1]. See this question for more solutions
– jwalton
Apr 4 '19 at 15:22
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How can I analyze Python code to identify problematic areas?
... the docs, I don't think you can use the command line. You have to use the Python API.
– Dave Halter
Apr 8 '15 at 9:37
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How to copy a file to a remote server in Python using SCP or SSH?
I have a text file on my local machine that is generated by a daily Python script run in cron.
14 Answers
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Print a list in reverse order with range()?
How can you produce the following list with range() in Python?
19 Answers
19
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Writing a dict to txt file and reading it back?
...ve to it that is safer. This is called literal_eval and you get it from a Python module called ast.
import ast
def reading(self):
s = open('deed.txt', 'r').read()
self.whip = ast.literal_eval(s)
ast.literal_eval() will only evaluate strings that turn into the basic Python types, so ther...
How can I reverse a list in Python?
How can I do the following in Python?
35 Answers
35
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Understanding generators in Python
I am reading the Python cookbook at the moment and am currently looking at generators. I'm finding it hard to get my head round.
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