1.while循环
age_of_sy=18
guess_age=input("guess age:")
count=0
while count<3:
if guess_age==age_of_sy:
print("yes,you are right!")
break
elif guess_age<age_of_sy:
print("think it bigger")
else:
print("think it smaller")
count+=1
if count==3:
continue_confirm=input("do you wang to keep trying?")
if continue_confirm !="n":
count=0
else:
print("you have tried too many times,please go away")
2.for循环
for i in range(0,10,2) : #步长为2，范围为0-10
print("loop",i)
for j in range(10):
if j>5:
break #berak跳出本次循环
3.for 循环之continue
for i in range (10)
if i<6:
print("loop",i)
else:
continue #continue是跳出本次循环进入下一循环。
print（hehe...）
原文：https://www.cnblogs.com/sy615/p/10910509.html