Gzip is short for gnuzip. It is a File compression program of GNU free software. Gzip was first created by Jean-Loup gailly and Mark Adler for File compression in UNIX systems. We often use files suffixed with .gz in linux, which are in GZIP format.
Many web sites to improve load speed, enable the HTTP server gzip compression, when the client sent an HTTP request in the declaration can accept gzip encoding, the server automatically to the HTTP response content for gzip compression. However, it
When python requests html data using gzip headers, the response content is garbled and cannot be decoded. pythongzip1. Background
When using the urllib2 module to capture web data, if you want to use the request header, you can reduce the amount of
1. Issue backgroundWhen crawling Web Data using URLLIB2 module, if you want to use how to request headers, reduce the amount of data transferred. The returned data is gzip compressed. Directly following Content.decode ("UTF8"), the decoding will be
Recently on the page has a Display data table function, data from backstage to the foreground JS form plug-in. Data format is JSONDue to the large amount of data, it is thought that gzip compression will be passed to the foreground. Before
On one page you see this: "Most Web sites do gzip compression for browsers that support gzip compression, and gzip-compressed pages can be processed in Python via gzip packages."So the problem is that the content has been compressed, direct decode
[Reprinted] About gzip compression enabled for HttpWebRequest and httpwebrequestgzip
Generally, gzip compression is not enabled when an HttpWebRequest object is used. If the data returned by the server is large, we need to enable gzip compression.
When using the HttpWebRequest object, generally we do not turn on gzip compression, if the server returns the data is relatively large, this is we need to turn on gzip compression, how to open it?1. To the HttpWebRequest object, add the following
python3.x Crawler,Found the error "Unicodedecodeerror: ' Utf-8 ' codec can ' t decode byte 0x8b in position 1:invalid start byte", has been looking for file errors, finally after the user's tips, the cause of the error Then there is a message in my
>>> "Hello". Encode ("hex")
' 68656c6c6f '
The corresponding can also
>>> ' 68656c6c6f '. Decode ("hex")' Hello '
Check the manuals, and these codec are available.
Codec
Aliases
Operand type
Purpose
Base64_codec
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