The following is reproduced on the Internet.
I. Unicode Origin
Unicode (Universal multiple-octet coded character set ):Currently, the most popular and promising character encoding specification solves the conflict between encoding in different
1, readexcel.system.php
Copy Code code as follows:
/* Vim:set expandtab tabstop=4 shiftwidth=4 softtabstop=4: * *
/**
* A class for reading Microsoft Excel spreadsheets.
*
* Originally developed by Vadim Tkachenko under the name
Python2.7 encoding and python2.7 Encoding
0. Write in front
Cause: I encountered some problems when I wrote a data preprocessing program. I couldn't find it (wrong or garbled) When I used the re module's regular expression search method.
After going
Encode and decode methods for Python's Str,unicode objectsThe Str object in Python is actually "8-bit string", a byte string, essentially similar to byte[in Java).The Unicode object in Python should be the equivalent of a string object in Java, or
Https://www.cnblogs.com/shengulong/p/7097869.htmlReference 1Reference 2Reference 3CSV is an abbreviation of the English comma separate values (comma separated value), as the name implies, the contents of the document are composed of "," delimited
Search Tool
The first step after determining a task is to find a library to work with. XLRD, XLWT, Xlutils are listed on Python Excel, but
They're older, XLWT don't even support Excel after version 07Their documents are not very friendly, may need
Thinking logic of computer programs (64) and thinking 64
For file processing, we introduced the stream method, section 57 introduced the byte stream, section 58 introduced the ghost stream, and also introduced the underlying file operation method,
When the CSV file is output from HTTP response, it is set to UTF8 without the defaultBOM, but Windows Excel uses the BOM to confirm the UTF8 encoding, all need to write the BOM to the beginning of the file. Microsoft's use of the BOM in UTF-8 is
JAVA outputs a UTF-8 encoded file with BOMWhen the CSV file is output from the http response, it is not included by default when it is set to utf8.Bom, But windows Excel uses bom to confirm utf8 encoding, and all bom needs to be written to the
This list contains Python Web crawl and data processing related libraries.Network-related
General
Urllib-Network library (standard library)
Requests-Network Library
Grab-network library (based on Pycurl)
Pycurl-Network
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