+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: General Coding Help (https://python-forum.io/forum-8.html)
+--- Thread: For x in [1,2,3] (/thread-3078.html)
For x in [1,2,3] - Ingo - Apr-27-2017
Since most of the python tutorials are in English and that's not my main lenguage, i'm very confused about the "For x in [...]" Usage.
Does it work like the "for x in range()" command, with x cycling through every integer from 0 and up or does it work by assigning x the specific values within the list?
RE: For x in [1,2,3] - wavic - Apr-27-2017
for loop loops over any iterable object.
It could be a list, dictionary, tuple, string and so on. Depending on the Python's version the loop over a dictionary will be in random order.
In [1]: from string import ascii_uppercase, ascii_lowercase
In [3]: for c in zip(ascii_uppercase, ascii_lowercase):
...: print(''.join(c), end=' ')
...:
Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz
In [4]: list(zip(ascii_uppercase, ascii_lowercase))
Out[4]:
[('A', 'a'),
('B', 'b'),
('C', 'c'),
('D', 'd'),
('E', 'e'),
('F', 'f'),
('G', 'g'),
('H', 'h'),
('I', 'i'),
('J', 'j'),
('K', 'k'),
('L', 'l'),
('M', 'm'),
('N', 'n'),
('O', 'o'),
('P', 'p'),
('Q', 'q'),
('R', 'r'),
('S', 's'),
('T', 't'),
('U', 'u'),
('V', 'v'),
('W', 'w'),
('X', 'x'),
('Y', 'y'),
('Z', 'z')]In [5]: for x in [0,1,2,3,4,5]: ...: print(x) ...: 0 1 2 3 4 5 In [6]: for x in range(6): ...: print(x) ...: 0 1 2 3 4 5Yes, is the same
RE: For x in [1,2,3] - Ingo - Apr-27-2017
Ok I get it now, thank you!