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basic02.py
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55 lines (47 loc) · 1.11 KB
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"""
for循环
range(0,5) 默认index为0， 循环5次，[0,5)
range(1,6) 默认index为1， 循环5次，[1,6)
"""
name = "张三"
for temp in name:
print(temp)
for temp in range(5):
print(temp)
for temp in range(1,6,2):
print(temp)
print("================")
"""
for循环应用,打印三角形
"""
for i in range(1,6):
for j in range(1,i+1):
print("*", end=" ")
print()
"""
break和continue,是配合循环才能使用
"""
for i in range(1,6):
if i == 2:
continue
if i == 3:
break
print(i)
print("================")
"""
for-else-break 和 while-else，比较pythonic， 主要用来判断循环是不是以break的方式结束
for循环**正常**结束之后，执行else块中的代码, continue不影响else块中的执行代码
for循环**非正常**结束之后，就是循环中是以break方式结束的，就不会执行else块中的代码
"""
for i in range(1,6):
print(i)
else:
print("else")
print("测试结束")
for i in range(1,6):
if i == 2:
break
print(i)
else:
print("else")
print("测试结束")