lemonamaya的博客

print语句print(1) print('we are goning todo something') print("I'm Morvan") print('I\'m m') print('apple'+'car') print('apple'+'4') print('apple'+str(4)) print(1+2) print('1+2') print(int('1')+2) print(f

while循环condition =1 while condition<10: print(condition) condition = condition+1死循环while True: print("I'm True")

for 循环example_list =[1,2,3,4,5,6,7,8,9,10,12,1,3] for i in example_list: print(i) print('inner of for') for windows :control+[print('outer of for')inner of for 和outer of for 是存在于for

if条件x=1 y=2 z=3 if x>y: print('x is greater than y.') if x<y: print('x is less than y.') if x<y<z: print('x is less than y,and y is less than z.')a=2 b=2 if a==b: print('a is equal to y

def函数 def function(): print('This is a function.') a=1+2 print(a)function()

open 打开文件，当文件不存在时会创建一个空文件 打开后要执行关闭命令，closetext = 'This is my first test.\nThis is next line\nThis is last line.' print(text)my_file = open('my file.txt','w') my_file.write(text) my_file.close()在打开的文件中

转自这里写链接内容今天看了下廖雪峰的网站，发现有个isinstance函数可以对参数类型进行判断：对参数类型做检查，只允许整数和浮点数类型的参数。数据类型检查可以用内置函数isinstance实现：def my_abs(x): if not isinstance(x, (int, float)): raise TypeError('bad operand type')