Problem Description Eddy usually writes articles ,but he likes mixing the English letter uses, for example "computer science" is written frequently "coMpUtEr scIeNce" by him, this mistakes lets Eddy's English teacher be extremely disco
Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase. Example 1: Input: "Hello" Output: "hello" Example 2: Input: "here" Output: "here" Example 3: Input: "L
上一篇文章中已经介绍了简单的python爬网页下载文档,但下载后的文档多为doc或pdf,对于数据处理仍然有很多限制,所以将doc/pdf转换成txt显得尤为重要.查找了很多资料,在linux下要将doc转换成txt确实有难度,所以考虑先将pdf转换成txt. 师兄推荐使用PDFMiner来处理,尝试了一番,确实效果不错,在此和大家分享. PDFMiner 的简介:PDFMiner is a tool for extracting information from PDF documents.
eval()和json.loads() 都可以将字符串转换成对应的python数据类型,举个字典的例子,同样适合其他数据类型元组.列表.集合. In [3]: ss = '{"a":1,"b":2}' In [4]: type(eval(ss)) Out[4]: dict In [7]: type(json.loads(ss)) Out[7]: dict json一种轻量级数据交换格式,可以将json对象当作比较特殊的字符串,eval与json.loads都可以将大