python loop

while loop

# print 1 to 10 
num = 0 
while num < 10: the while syntax is the same as if 
    num += 1 is a limit, every time num is increased by 1, otherwise it will enter an infinite loop 
    print(num)

 

 

# print 1 to 10 and add 
num = 0 
num1 = 0 
while num < 10: 
    num += 1 
    num1 += num num1 is equivalent to adding up the num results of each loop 
    print(num,num1)

 

num = 0 
while num < 10: 
    num += 1 
    print("num:",num) 
else: means 
    print("the loop program has been executed") after the above loop ends

 

for loop (traverse a collection)