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  1. def permutations(items):
  2.     if len(items) == 1:
  3.         yield tuple(items)
  4.         return
  5.     for index, fixed in enumerate(items):
  6.         without_fixed = items[:index] + items[index + 1:]
  7.         for x in permutations(without_fixed):
  8.             yield (fixed, *x)
  9.  
  10.  
  11. for p in permutations(list('abcd')):
  12.     print(''.join(p))
Success #stdin #stdout 0.02s 9064KB
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stdin
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Standard input is empty
stdout
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abcd
abdc
acbd
acdb
adbc
adcb
bacd
badc
bcad
bcda
bdac
bdca
cabd
cadb
cbad
cbda
cdab
cdba
dabc
dacb
dbac
dbca
dcab
dcba
https://ideone.com/8Xvl1J
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
public

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