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Items in JSON object are out of order using “json.dumps”?
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Both Python dict (before Python 3.7) and JSON object are unordered collections. You could pass sort_keys parameter, to sort the keys:
>>> import json
>>> json.dumps({'a': 1, 'b': 2})
'{"b": 2, "a": 1}'
>>&...
How to avoid having class data shared among instances?
... @AmalTs It looks like you don't understand how assignment in python works. See this video or this SO post. The behaviour you see is caused by the fact that you are mutating lists but rebinding references to ints and strings.
– Андрей Беньковский
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How to check if an object is a generator object in python?
In python, how do I check if an object is a generator object?
9 Answers
9
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How to override the copy/deepcopy operations for a Python object?
...y__ methods. I've already Googled around and looked through the built-in Python modules to look for instances of the __copy__ and __deepcopy__ functions (e.g. sets.py , decimal.py , and fractions.py ), but I'm still not 100% sure I've got it right.
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How to extract the year from a Python datetime object?
I would like to extract the year from the current date using Python.
4 Answers
4
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Center a button in a Linear layout
...er what I try to do the button will top align centre. I have included the XML below, can some one point me in the right direction?
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How to convert an int to a hex string?
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Try:
"0x%x" % 255 # => 0xff
or
"0x%X" % 255 # => 0xFF
Python Documentation says: "keep this under Your pillow: http://docs.python.org/library/index.html"
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How to check if a float value is a whole number
...gt; (1.555).is_integer()
False
The method was added to the float type in Python 2.6.
Take into account that in Python 2, 1/3 is 0 (floor division for integer operands!), and that floating point arithmetic can be imprecise (a float is an approximation using binary fractions, not a precise real num...
Writing a Python list of lists to a csv file
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Python's built-in CSV module can handle this easily:
import csv
with open("output.csv", "wb") as f:
writer = csv.writer(f)
writer.writerows(a)
This assumes your list is defined as a, as it is in your question. You...
Split string every nth character?
...you tell it. The above answer is really only just a for loop but expressed pythonically. Also, if you need to remember a "simplistic" answer, there are at least hundreds of thousands of ways to remember them: starring the page on stackoverflow; copying and then pasting into an email; keeping a "help...