Mailman 3 March 2024 - docs

A suggestion for improving the documentation of chapter 10.9. Data Compression
by Guy Goldner May 22, 2024

May 22, 2024

Hello dear Python gods :) I'm new at Python and was going over the documentation . This useful paragraph : https://docs.python.org/3.7/tutorial/stdlib.html#data-compression provides info for compressing text but IMHO some important additional info is needed, without which I expect nearly all users would get stuck just as I have. Moreover, while looking for a solution I noticed a lot of articles with outdated examples which no longer work - this confused me even more to the point I started suspecting something was amiss on my end... Anyhow, adding this info would do the trick : zlib works only with bytes and in Python 3.x strings are no longer bytes. Example : *>>> zlib.compress('this is a sample string which does not work in zlib because it requires bytes and not unicode')Traceback (most recent call last): File "<stdin>", line 1, in <module>TypeError: a bytes-like object is required, not 'str'>>>* Luckily Python has a very simple solution for this : encode to utf-8, compress, decode back to unicode like so : *>>> text = 'this is a sample string which does not work in zlib because it requires bytes and not unicode with chars like this »שלום '>>> encoded = text.encode()>>> text = 'this is a sample with unicode chars »שלום '>>> encoded = text.encode()>>> compressed = zlib.compress(encoded)>>> decompressed = zlib.decompress(compressed)>>> decoded = decompressed.decode()>>> len(text),len(encoded),len(compressed) #notice that compression of short strings can be larger than the original(42, 47, 54)>>> print(text,'\n',encoded,'\n',compressed)this is a sample with unicode chars »שלום b'this is a sample with unicode chars \xc2\xbb\xd7\xa9\xd7\x9c\xd7\x95\xd7\x9d ' b'x\x9c+\xc9\xc8,V\x00\xa2D\x85\xe2\xc4\xdc\x82\x9cT\x85\xf2\xcc\x92\x0c\x85\xd2\xbc\xcc\xe4\xfc\x94T\x85\xe4\x8c\xc4\xa2b\x85C\xbb\xaf\xaf\xbc>\xe7\xfa\xd4\xebs\x15\x00\xb2K\x14|'>>> text == decodedTrue* Thank you ! You are doing a great thing ! B.R., Guy Goldner

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confusing code line
by don l April 17, 2024

April 17, 2024

https://docs.python.org/3/tutorial/introduction.html this isn't explained print(a) a, b = b, a+b why have a? why have b = b ? why aren't 3 values printed? why only a+b is printed? don

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Tutorial for Python-3.12.2 for windows
by Rplpolo April 4, 2024

April 4, 2024

Hi, I am trying to teach myself python. Could you please help identify a pdf document with tutorials to set up python and start programming. I think I have installed it properly but the commands are not recognised. For example: C:\Users\Lumep>print ("Hello, Python!"); Unable to initialize device PRN Thank you G Vera

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semantic error on python refetrence in description of POW function
by marc rovira March 31, 2024

March 31, 2024

Hello. In the description of the POW() function it says: ...For a negative base of type int or float and a non-integral exponent, a complex result is obtained. For example, pow(-9, 0.5) returns a value close to 3j. I guess I would have to say "a non-integer exponent" instead of "a non-integral exponent" Also in the Spanish version it says "no integral" Thank you and sorry if I'm wrong

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the download URLs on the following documentation download page are report "404 — Archive Not Found" https://docs.python.org/3.5/download.html
by Haiping Sun March 29, 2024

March 29, 2024

hi, the download URLs on the following documentation download page are report "404 — Archive Not Found" https://docs.python.org/3.5/download.html

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Python Documentation
by Abdihakim Ali Ahmed March 10, 2024

March 10, 2024

Good Evening. I wish to request for documentation that can assist me in learning python language as i am interested with the language. though i have downloaded other documentation for the latest version 3.12.2 but the documentation seems like for those who may make modules. Kindly assist me. Thank you

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