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string.Join on a List or other type
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answered Aug 31 '10 at 15:17
Mark ByersMark Byers
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Dictionaries and default values
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103
You can also use the defaultdict like so:
from collections import defaultdict
a = defaultdict...
Ask for User Permission to Receive UILocalNotifications in iOS 8
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KPMKPM
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How to 'insert if not exists' in MySQL?
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Difference between return and exit in Bash functions
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Why was the arguments.callee.caller property deprecated in JavaScript?
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edited May 1 '14 at 19:10
Pacerier
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Rollback a Git merge
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edited May 23 '17 at 12:10
Community♦
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answered Jul 30 '12 at 13:32
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Vim: Creating parent directories on save
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answered Nov 27 '10 at 22:08
ZyXZyX
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Why do you have to call .items() when iterating over a dictionary in Python?
... -- which is a check I believe I may have performed, or wanted to perform, 100 times more rarely than what if k in C actually means, checking the presence of the key only and completely ignoring the value.
On the other hand, wanting to loop just on keys is quite common, e.g.:
for k in thedict:
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Forced naming of parameters in Python
...os, *, forcenamed):
... print(pos, forcenamed)
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>>> foo(pos=10, forcenamed=20)
10 20
>>> foo(10, forcenamed=20)
10 20
>>> foo(10, 20)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: foo() takes exactly 1 positional argu...