Для примера петли Python 3
for num in nums:
for letter in 'abs':
print(num, letter)
Silly Sheep
for num in nums:
for letter in 'abs':
print(num, letter)>>> def range1(start, end):
... return range(start, end+1)
...
>>> range1(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]for i in range(start, end):
expression# if numbers are same in the range function then,
# the range function outputs empty range
# this is because, there are no integers b/w n and n
for i in range(1,1):
print("runs")
# prints nothing
When you are not interested in some values returned by a function
we use underscore in place of variable name .
Basically we don't care about the iterator value, just that it
should run some specific number of times.When you are not interested in some values returned by a function we use underscore in place of variable name .
Basically it means you are not interested in how many times the loop is run till now just that it should run some specific number of times overall.