摘要： # bytes object b = b"example" # str object s = "example" # str to bytes bytes(s, encoding = "utf8") # bytes to str str(b, encoding = "utf-8") # an alternative meth... 阅读全文

摘要： 字典循环默认取key例子 dict={'name':'john','number':'201801','weight':'80kg','tall':'180cm"} # 直接循环字典默认取key for i in dict： print(i) # 也可以循环key for i in dict(key 阅读全文

摘要： UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("lxml"). This usually isn't a problem, b 阅读全文