Matrix transpose using list comprehensions in python

python list matrix 5 years, 2 months ago
a = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] #Procedure1:-------- transposed = [[row[i] for row in a ] for i in range(3)] print(transposed) #Procedure2:-------- tansposed = [] for i in range(3): lst = [] for row in a: lst.append(row[i]) transposed.append(lst) print(transposed)
2174
Instructions

List comprehensions in python basically reduce the loc.
Check the difference between two procudures. Both generates the same output.
Its complicated for the one's who dnt know about list comprehensions.
Readability wise procedure2 is good.

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2 Comments

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harika
yeah.. Thanks for the finding.
kishore_kumar
In procedure 2, I think 2nd loop should be for row in a, not for i in a
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