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How do I parse a string to a float or int?
In Python, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ?
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Multiple levels of 'collection.defaultdict' in Python
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This is awesome. It seems I renew my marital vows to Python daily.
– mVChr
Nov 3 '14 at 22:32
3
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Generate 'n' unique random numbers within a range [duplicate]
I know how to generate a random number within a range in Python.
4 Answers
4
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How Pony (ORM) does its tricks?
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Pony ORM author is here.
Pony translates Python generator into SQL query in three steps:
Decompiling of generator bytecode and rebuilding generator AST
(abstract syntax tree)
Translation of Python AST into "abstract SQL" -- universal
list-based representation of a...
Python list iterator behavior and next(iterator)
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Something is wrong with your Python/Computer.
a = iter(list(range(10)))
for i in a:
print(i)
next(a)
>>>
0
2
4
6
8
Works like expected.
Tested in Python 2.7 and in Python 3+ . Works properly in both
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log messages appearing twice with Python Logging
I'm using Python logging, and for some reason, all of my messages are appearing twice.
8 Answers
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How to remove the left part of a string?
I have some simple python code that searches files for a string e.g. path=c:\path , where the c:\path part may vary. The current code is:
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Python executable not finding libpython shared library
I am installing Python 2.7 on CentOS 5. I built and installed Python as follows
9 Answers
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...to functions as described in the section more on defining functions in the Python documentation.
The *args will give you all function parameters as a tuple:
def foo(*args):
for a in args:
print(a)
foo(1)
# 1
foo(1,2,3)
# 1
# 2
# 3
The **kwargs will give you all
keyword arg...
Python threading.timer - repeat function every 'n' seconds
...le to start and stop and reset the timer. I'm not too knowledgeable of how Python threads work and am having difficulties with the python timer.
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