wen python循环语句
while循环
一般形式：
while condition:
statement1
else:
statement2
a = 0
while a < 3:
print(a)
a = a + 1
else:
print(a, " 大于或等于3")
while循环
一般形式：
while condition:
statement1
else:
statement2
a = 0
while a < 3:
print(a)
a = a + 1
else:
print(a, " 大于或等于3")
