十八、流程控制之while
18.1语法
while 条件:
代码块
18.2 while + break
while 条件:
代码块
break
18.3 while + continue
while 条件:
代码块
if 条件:
代码块
cotinue
18.4 while 循环的嵌套
while 条件:
代码块
else:
print('如果没有被break,就会打印出来')
18.5 taq 控制循环退出
18.6 while + else
十九、流程控制之for循环
19.1 语法
for i in range/str/list/tuple/dict/set(可迭代对象):
print(i)
19.2 for + break
for i in range/str/list/tuple/dict/set(可迭代对象):
print(i)
break
19.3 for + continue
for i in range/str/list/tuple/dict/set(可迭代对象):
print(i)
if 条件:
continue
19.4 for循环嵌套
for i in range/list/str/tuple/dict/set(可迭代对象):
print(i)
else:
print('如果没有被break,就会被打印出来')
19.5 for + else
19.6 for循环实现loadinq
import time
print('Loading',end='')
for i in range(6):
print(".",end='')
time.sleep(0.2)