Python循环语句
- 循环语句语法
循环函数
循环体
if函数
n=input(“请输入一个数:”)
if n>10:print("大于10")
elif n<10:
print("小于10")
else:
print("等于10")
*注 如果第一个if条件语句满足,则不进行下一个if条件语句
n=10
if n>2:
print(n,"大于2")
elif n>3:
print(n,"大于3")
else:
print(n,"大于4")
#输出结果:10大于2
while函数
1到100加和
n=10
sum_10=0
counter=1
while counter<=100:sum_100=sum_100+counter
counter+=1
print(sum_100)
for函数(循环遍历)
languages=[‘java’,’python’,’c++’,’c’]
for language in languages:print(language)
else: #循环执行完执行else
print("end")
无限循环
while true:
num_n=input("input a number")
print("this number is ",num_n)
continue(跳过一次循环)
languages=[“java”,”python”,’c++’,’c’]
for language in languages:if language =="java":
continue #跳过此次循环
print(language)
else: #循环执行完执行else
print("end")
back(跳出循环)
counter=0;
while true:if counter >10:
break
counter+=1
else:
print(counter)
*注 break终止后,任意对应的循环块else不在执行
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