Loop Statement in Python

• Keyword: for, while
• for need to set number range
• while need to set when stop the repeatation
• use for: when you know how many repeat needed
• use while: when you do not know how many repeat needed

for or while [range condition] :

[space]code you want to repeat

for statement Example

for i in range(10): 
    print("Hi") # Hi printed 10 times

temp=[A,B,C]
for i in range(len(temp)): 
    print(i) # 0 1 2 index printed

temp=[A,B,C]
for i in range(temp): 
    print(i) # A B C values in List printed

for i, j in enumerate(a):
    print(i, ":", j) # 0 : A 1 : B 2 : C index and value

numbers = [9, 7, 7]
letters = ["z", "x", "y"]
for pair in zip(numbers, letters):
    print(pair)
# (9, 'z') (7, 'x') (7, 'y') index and value Tuple

for i in range(5, 10):  # 5 ~ 9
    print(i) # 5 6 7 8 9

a = "balloon"
for i in a:
    print(i) # b a l l o   loop until i is "o"
    if i == "o":
        break

while Statement

i = 0
while i < 5:
    print(i) # 0 1 2 3 4 loop until i is bigger than 5
    i = i + 1