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How to enumerate a range of numbers starting at 1
I am using Python 2.5, I want an enumeration like so (starting at 1 instead of 0):
12 Answers
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How do you get the logical xor of two variables in Python?
How do you get the logical xor of two variables in Python?
24 Answers
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Add string in a certain position in Python
Is there any function in Python that I can use to insert a value in a certain position of a string?
8 Answers
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Transpose list of lists
...w about
map(list, zip(*l))
--> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
For python 3.x users can use
list(map(list, zip(*l)))
Explanation:
There are two things we need to know to understand what's going on:
The signature of zip: zip(*iterables) This means zip expects an arbitrary number of argu...
Why can't a text column have a default value in MySQL?
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Windows MySQL v5 throws an error but Linux and other versions only raise a warning. This needs to be fixed. WTF?
Also see an attempt to fix this as bug #19498 in the MySQL Bugtracker:
Bryce Nesbitt on April 4 2008 4:36pm:
On MS Windows the "no DEFAULT" ...
Reading a binary file with python
I find particularly difficult reading binary file with Python. Can you give me a hand?
I need to read this file, which in Fortran 90 is easily read by
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In Python, how do I create a string of n characters in one line of code?
I need to generate a string with n characters in Python. Is there a one line answer to achieve this with the existing Python library? For instance, I need a string of 10 letters:
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Outputting data from unit test in python
If I'm writing unit tests in python (using the unittest module), is it possible to output data from a failed test, so I can examine it to help deduce what caused the error? I am aware of the ability to create a customized message, which can carry some information, but sometimes you might deal with m...
Determine if variable is defined in Python [duplicate]
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@einpoklum, Python uses exception StopIteration within just about every for statement -- that's how an iterator lets it known that it's all done. And of course, it is far from "an exceptional case" for iteration to be done -- indeed, on...
cv2.imshow command doesn't work properly in opencv-python
I'm using opencv 2.4.2, python 2.7
The following simple code created a window of the correct name, but its content is just blank and doesn't show the image:
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