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Hello I come from the language c++ and java, and I am learning python. I came across the following piece of code:
data = {'Player' : ['Wade', 'James', 'Kobe', 'Curry'],
'First' : [10, 10, 8, 12],
'Second' : [12, 8, 13, 8],
'Third' : [15, 12, 8, 8],
'Fourth' : [18, 20, 15, 8] }
bar_width = 0.5
bars = [i + 1 for i in range(len(data['First']))]
ticks = [i + (bar_width/2) for i in bars]
The loop for I can understand perfectly, but I didn’t understand the expression i + 1 and i + (bar_width/2) that comes before the for. I’d like to know the name of this, so I can at least start looking, or if anyone has any articles, could you share them? Thank you very much!
Is in hand: How the inline "for" command works?
– Woss
[i + 1 for i in range(len(data['First']))]can be read as[1+1, 2+1, 3+1, 4+1]. Since I go from 1 to 4 because of this instruction:for i in range(len(data['First']))which in turn creates a range (range) of the length (Len) of the index list 'First' (which has 4 items)– Bacco
That one article explains that well
– Tuxpilgrim
Thank you very much, guys!
– AAS
For anyone who wants to look for it, the name is
list comprehension- and there are the correlatesgenerator expression,set comprehensionanddict comprehension.– jsbueno