python-基础知识之for循环

一、for 循环语法

循环字符串：
str = 'hello'
for x in str:
print(x ,end=' ')# end="-" end="+"
#h e l l o -----end=' '
#h-e-l-l-o -----end="-"
#h+e+l+l+o -----end="+"

循环列表：
a = ["h","e","l","l","o"]
for x in a:
print(x)二、break 和 continue
for x in str:
print(x)
break
print(123)

for x in str:
print(x)
continue
print(123)
三、for...else...组合使用
for x in str:
print(x)
else: #如果for正常循环完才执行else，如果遇到错误，break等，则不执行
print("答应完成")四、打印九九乘法表
for i in range(1,10):
for j in range(1,i+1):
print('%s*%s=%s' %(i,j,i*j),end=' ')
print()