Tools, FAQ, Tutorials:
'for ... in' Statement with List of Tuples
How to use "for ... in" statements with a list of tuples in Python code?
✍: FYIcenter.com
Usually, "for ... in" statements are used with simple lists. But you can also use a "for ... in" statement with a list of tuples. In this case, you can put multiple looping variables inside the loop item:
for (v1, v2, ... ) in list_of_tuples: statement-block else : statement-block
For example:
>>> for (v1, v2) in [('gallahad','the pure'), ('robin', 'the brave')]: ... print(v1+", "+v2) ... gallahad, the pure robin, the brave
This form of loops is very useful if you want to loop through a "dict" object:
>>> d = {'gallahad': 'the pure', 'robin': 'the brave'} >>> for (k,v) in d.items(): ... print(k+": "+v) ... gallahad: the pure robin: the brave
And it is also very useful if you want to loop through a "list" object:
>>> l = ['tic', 'tac', 'toe'] >>> for (i,v) in enumerate(l): ... print(i, v) ... 0 tic 1 tac 2 toe
⇒ 'while ... else' Repeating Statement Blocks
⇐ 'for ... in ... else' Repeating Statement Blocks
2018-08-14, 1658🔥, 0💬
Popular Posts:
How to install "C++/CLI Support" component in Visual Studio? I need to build my Visual Studio C++/CL...
How To Convert a Character to an ASCII Value? If you want to convert characters to ASCII values, you...
How to detect errors occurred in the json_decode() call? You can use the following two functions to ...
How to access Request body from "context.Request.Body" object in Azure API Policy? Request body is t...
Where to find tutorials on Using Azure API Management Developer Portal? Here is a list of tutorials ...