My first Python demo
>>> print(movies)
['a', 'b', 'c'] >>> print(len(movies)) 3 >>>Python 的变量标示符没有类型
Python定义变量为stirng类型后,可以tab查询可用的api
for或者while循环语句后加:后,再写逻辑代码
定义的变量支持混合类型 movies=["a","b",1823,1234]
变量可以直接定义,不需要声明
>>> count =0
>>> while count<len(movies) SyntaxError: invalid syntax >>> count =0 >>> while count<len(movies) SyntaxError: invalid syntax >>> while count<len(movies): print(movies[count]) count++ SyntaxError: invalid syntax >>> while count<len(movies): print(movies[count]) count=count+1 a b c d