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  1. a = 1
  2. b = 2
  3. print("a = ",a," b = ",b)
  4.  
  5. # Никакая функция тут не нужна.
  6. a,b = b,a
  7. print("a = ",a," b = ",b)
  8.  
  9. # Но если так хочется, можно хуйню сделать:
  10. def func(arg1,arg2):
  11. return arg2, arg1
  12.  
  13. a = 1
  14. b = 2
  15.  
  16. a,b = func(a,b)
  17.  
  18. print("a = ",a," b = ",b)
Success #stdin #stdout 0.02s 8696KB
stdin
Standard input is empty
stdout
a =  1  b =  2
a =  2  b =  1
a =  2  b =  1