PEP 20 -- the Zen of Python

Pig brother 66 2020-11-13 07:33:08
pep zen python


Maybe everyone has heard of “Python zen ”, It is from Python One of the core development members of Tim Peter Write , Become Python Programming and design guidelines .

Maybe you still know that python Input... In the interpreter import this You can see “Python zen ”, But why import this What about this sentence ? Another little story in the middle :

2001 In the autumn ,Foretec( A conference organization company ) Is preparing to hold the tenth International Python Conference(IPC 10,Pycon The forerunner of ),Foretec I plan to solicit a print for the meeting T The slogan on the T-shirt , In the end they came from Python The community received 500 Multiple submissions .

Foretec Invited Python The core development of Guido, Fred, Jeremy,Tim Peter,Barry Wait for the judges . The judges filtered out the contributions 130 There has been no progress since more than one , They didn't confirm the final slogan until the meeting was about to take place . Insert picture description here
A few days before the meeting , It's time for the judges to have to make a decision . So the Tim Peter and Barry The two take turns judging , Half of them are eliminated each time, leaving half , Until at last there was only one .
Final ,“import this” Selected out , Everyone to "import this" Very satisfied with . But when you choose this one , They realized that they had to achieve it . After a brief discussion ,“import this” Of is set to output Tim Peter Written 《The Zen of Python》— There was no. : One fruit, one melon

>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
# 1. Beauty is better than ugliness (Python To write beautiful code as the goal )
Explicit is better than implicit.
# 2. Clarity is better than obscurity ( Beautiful code should be clear , Naming specification , The style is similar )
Simple is better than complex.
# 3. Simplicity is better than complexity ( Beautiful code should be concise , Don't have complex internal implementations ) 
Complex is better than complicated.
# 4. Complexity is better than disorder ( If complexity is inevitable , That code can't have a difficult relationship , Keep the interface simple )
Flat is better than nested.
# 5 Flat is better than nested ( Beautiful code should be flat , There can't be too much nesting ) 
Sparse is better than dense.
# 6. Spacing is better than compactness ( Beautiful code with proper spacing , Don't expect a line of code to solve the problem ) 
Readability counts.
# 7. Readability is very important ( Beautiful code is readable ) 
Special cases aren't special enough to break the rules.
Although practicality beats purity.
# 8. Even in the name of the practicality of special cases , And don't violate these rules ( These rules are supreme ) 
Errors should never pass silently.
Unless explicitly silenced.
# 9. Don't tolerate all mistakes , Unless you are sure you need to ( Capture exceptions accurately , Don't write except:pass Style code ) 

 Insert picture description here

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