Python
Loops
A for loop steps through a sequence, often the result of
range(n), which produces the numbers 0 up to (not including)
n.
Example: summing a range
total = 0
for i in range(1, 6):
total += i
print("Total:", total)Total: 15range(1, 6) produces 1, 2, 3, 4, 5, the second number is
the stopping point, not included, which trips up nearly every beginner at
least once. A while loop, by contrast, repeats as long as
its condition stays true, and is the better tool whenever you don't know
the number of iterations in advance.
total = 0
for i in range(1, 6):
total += i
print("Total:", total)Total: 15