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  1. #!/usr/bin/env python3
  2.  
  3. import timeit
  4.  
  5. def f():
  6.     buf = b""
  7.  
  8.     for i in range(1024):
  9.         buf += b'c'
  10.  
  11.     return buf
  12.  
  13. def g():
  14.     buf = bytearray()
  15.  
  16.     for i in range(1024):
  17.         buf.append(b'c'[0])
  18.  
  19.     return bytes(buf)
  20.  
  21. if __name__ == "__main__":
  22.     print(timeit.repeat(f, number=1000))
  23.     print(timeit.repeat(g, number=1000))
Success #stdin #stdout 1.75s 9440KB
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stdin
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Standard input is empty
stdout
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[0.3890340328216553, 0.38514184951782227, 0.3849821090698242]
[0.18365788459777832, 0.18457698822021484, 0.18431401252746582]
https://ideone.com/4CtQHQ
language:
Python 3 (python  3.9.5)
created:
10 years ago
visibility:
public

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