左手の明天的博客最近在使用python过重遇到这个问题,NameError: name 'xxx' is not defined,在学习python或者在使用python的过程中这个问题大家肯定都遇到过,在这里我就这个问题总结以下几种情况: 错误NameError: name 'xxx' is ...
cumei1658的博客It has been called a “gem” and “pretty much the coolest thing ever,” and if you have not heard of it, then you are missing out on one of the greatest corners of the Python 3 standard library: ...
若竹之心的博客 del()函数 变量一旦删除,就不能引用,否则就会报错 n = "hello python" print(n) #output:hello python del n print(n) #output:NameError: name 'n' is not defined 六、数学函数 1. abs(num)返回num的绝对值函数...