break和continue的方法（break 直接跳出循环）与 （continue本次忽略，但之后的继续）
break 跳出循环 （做到这个结果就结束）
continue 结束本次循环 （只是这个结果不要，继续做循环）
跳出循环
while condition（条件） expression(表达)
条件满足的情况 跳出循环
break
编写文件
x = 0
while x <= 10:
print(x, end=" ")
x += 1
print("小于等于10")
y = 0
print("加多一个条件，当y等于6的时候跳出循环 break; 这个是; 号 不是:")
while y <= 10:
if y == 6:
break;
print(y, end=" ")
y += 1
输出结果
C:\Users\Administrator>"C:\Users\Administrator\Desktop\new 1002.py"
0 1 2 3 4 5 6 7 8 9 10 小于等于10
加多一个条件，当y等于6的时候跳出循环 break; 这个是; 号 不是:
0 1 2 3 4 5
C:\Users\Administrator>
编写文件
print(1)
dalao = ["aa","AA","bb","BB"]
for xiaodi in dalao:
print(xiaodi)
# .startwith() 以什么开头的方法
# 列表 dalao
print(2)
# 如果不是a 开头的 就 跳出循环
dalao = ["aa","AA","bb","BB"]
for xiaodi2 in dalao:
if not xiaodi2.startswith("a"):
break;
print(xiaodi2)
print(3)
#如果是 a 或者 A 开头就打印
dalao = ["aa","AA","bb","BB"]
for xiaodi2 in dalao:
if xiaodi2.startswith("a") or xiaodi2.startswith("A"):
print(xiaodi2)
输出结果
C:\Users\Administrator>"C:\Users\Administrator\Desktop\new 1002.py"
1
aa
AA
bb
BB
2
aa
3
aa
AA
C:\Users\Administrator>
continue;
continue 结束本次循环 （只是这个结果不要，继续做）
编写文件
print(1)
dalao = ["aa","AA","bb","BB"]
for xiaodi in dalao:
if xiaodi.startswith("a"):
continue;
print(xiaodi)
输出结果
C:\Users\Administrator>"C:\Users\Administrator\Desktop\new 1002.py"
1
AA
bb
BB
C:\Users\Administrator>
编写
dalao = ["aa","AA","bb","BB"]
dajie = [1,2,3,4]
i = 0
while i < len(dajie):
print(i)
i += 1
输出
0
1
2
3
编写
dalao = ["aa","AA","bb","BB"]
dajie = [1,2,3,4]
a = 1
while a < len(dajie):
for d in dalao:
print(d,end=" ")
print(a)
a += 1
输出
aa AA bb BB 1
aa AA bb BB 2
aa AA bb BB 3
编写
break 满足当前条件 就跳出循环
dalao = ["aa","AA","bb","BB"]
dajie = [1,2,3,4]
a = 1
while a < len(dajie):
for d in dalao:
if d.startswith("b"):
break;
print(d,end=" ")
print(a)
a += 1
输出
aa AA 1
aa AA 2
aa AA 3
编写
continue 满足当前条件的 本次忽略 然后继续
dalao = ["aa","AA","bb","BB"]
dajie = [1,2,3,4]
a = 1
while a < len(dajie):
for d in dalao:
if d.startswith("b"):
continue;
print(d,end=" ")
print(a)
a += 1
输出
aa AA BB 1
aa AA BB 2
aa AA BB 3