Accessing the index in 'for' loops
posted on 2023-05-03 19:30 read(322) comment(0) like(29) collect(2)
How do I access the index while iterating over a sequence with a for loop?
xs = [8, 23, 45]
for x in xs:
print("item #{} = {}".format(index, x))
Desired output:
item #1 = 8
item #2 = 23
item #3 = 45
solution
Use the built-in function enumerate():
for idx, x in enumerate(xs):
print(idx, x)
It is non-pythonic to manually index via for i in range(len(xs)): x = xs[i] or manually manage an additional state variable.
Check out PEP 279 for more.
Category of website: technical article > Q&A
Author：qs
link：http://www.pythonblackhole.com/blog/article/145/5b0b067ea9b35a8b104f/
source：python black hole net
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