84 lines
2.9 KiB
Markdown
84 lines
2.9 KiB
Markdown
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# different ways to join strings
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I measured the time it takes to make 100000 concatenations to the different ways of joining strings to see which is the best and which is the worst
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```Python
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a, b, c = "egg", "ham", "spam"
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# Prueba de concatenado con el operador "+"
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@explain_time
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def test_operator_plus():
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for _ in range(100000):
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a + b + c
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>>> test_operator_plus()
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2 function calls in 0.029 seconds
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Ordered by: standard name
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ncalls tottime percall cumtime percall filename:lineno(function)
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1 0.029 0.029 0.029 0.029 <ipython-input-314-0f5c5594903b>:1(test_operator_plus)
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1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
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# Prueba de concatenado con el método "join"
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@explain_time
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def test_method_join():
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for _ in range(100000):
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"".join((a, b, c))
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>>> test_method_join()
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100002 function calls in 0.049 seconds
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Ordered by: standard name
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ncalls tottime percall cumtime percall filename:lineno(function)
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1 0.032 0.032 0.049 0.049 <ipython-input-316-953c959108ce>:1(test_method_join)
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1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
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100000 0.017 0.000 0.017 0.000 {method 'join' of 'str' objects}
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#Prueba de concatenado con los verbos como en C
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@explain_time
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def test_format_c_like():
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for _ in range(100000):
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"%s%s%s"%(a, b, c)
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>>> test_format_c_like()
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2 function calls in 0.037 seconds
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Ordered by: standard name
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ncalls tottime percall cumtime percall filename:lineno(function)
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1 0.037 0.037 0.037 0.037 <ipython-input-318-80c622dd1350>:1(test_format_c_like)
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1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
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# Prueba de concatenado con el método "format"
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@explain_time
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def test_method_format():
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for _ in range(100000):
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"{}{}{}".format(a, b, c)
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>>> test_method_format()
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100002 function calls in 0.066 seconds
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Ordered by: standard name
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ncalls tottime percall cumtime percall filename:lineno(function)
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1 0.025 0.025 0.066 0.066 <ipython-input-321-c7b97e43fcc1>:1(test_method_format)
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1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
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100000 0.041 0.000 0.041 0.000 {method 'format' of 'str' objects}
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# Prueba de concatenado utilizando los f-strings
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@explain_time
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def test_f_strings():
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for _ in range(100000):
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f"{a}{b}{c}"
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>>> test_f_strings()
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2 function calls in 0.024 seconds
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Ordered by: standard name
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ncalls tottime percall cumtime percall filename:lineno(function)
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1 0.024 0.024 0.024 0.024 <ipython-input-324-85e436d5b675>:1(test_f_strings)
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1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
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```
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