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Timeit and Partials


Timeit and Partials

By : user2950206
Date : November 17 2020, 11:52 AM
may help you . In Python function objects are "first-class" objects. They can be passed as arguments to functions just like any other object. In this case, timeit.repeat is being passed the function object partial(summer, 1, 2) so that later, inside of repeat the function object can be called and timed.
partial(summer, 1, 2) itself is another example of passing a function (summer) as an argument to another function (partial). It makes sense that you'd want to pass the function object since you don't want to call summer yet. Instead you want the function object returned by partial to have access to summer so it can be called later when that function object is called.
code :
In [36]: partial(summer, 1, 2)
Out[36]: <functools.partial at 0x7ff31f0bd3c0>
In [37]: partial(summer, 1, 2)()
Out[37]: 3
In [41]: func = partial(summer, 1, 2)

In [42]: timeit.repeat('func()', 'from __main__ import func')
Out[42]: [0.11481308937072754, 0.10448503494262695, 0.1048579216003418]
timeit.repeat(func) 
import pdb
pdb.set_trace()
timeit.repeat(func)
    elif callable(stmt):
        self.src = None
        if isinstance(setup, str):
            _setup = setup
            def setup():
                exec(_setup, global_ns, local_ns)
def inner(_it, _timer, _func=func):
    setup()
    _t0 = _timer()
    for _i in _it:
        _func()       # <--- The function call happens here
    _t1 = _timer()
    return _t1 - _t0
return inner


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timeit returning a negative value occasionally, possible bug in timeit

timeit returning a negative value occasionally, possible bug in timeit


By : Alexey Sosnin
Date : March 29 2020, 07:55 AM
I hope this helps . On Windows, timeit by default uses time.clock as its time source, which in turn uses the Windows API QueryPerformanceCounter. Depending on the version of Windows and the capabilities of the machine QueryPerformanceCounter uses the processor's time stamp counter (TSC) as a timer. A number of older multiprocessor machines weren't able to keep the TSC in sync between processors and didn't report this correctly to Windows, or had bugs trying to do so. This results in QueryPerformanceCounter returning results that appear to jump around as the process gets executed on different processors.
Microsoft has a long detailed description of the problem on MSDN: http://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx
timeit.timeit variable importing in python

timeit.timeit variable importing in python


By : Blessing Francis Ome
Date : March 29 2020, 07:55 AM
may help you . timeit.Timer takes a callable as well as a string to eval
code :
def func():
    var1 = 'aaa'
    var2 = 'aab'
    t1 = timeit.timeit(lambda: var1 == var2, number = 10**4)
def func():
    var1 = 'aaa'
    var2 = 'aab'
    def closure():
        return var1 == var2
    t1 = timeit.timeit(closure, number = 10**4)
AttributeError: 'module' object has no attribute 'timeit' while doing timeit a python function

AttributeError: 'module' object has no attribute 'timeit' while doing timeit a python function


By : Hamid Soltani
Date : March 29 2020, 07:55 AM
wish helps you You named your file timeit.py, which blocks the builtin module, so import timeit is importing your own file. Name your file something else.
Python timeit.timeit do untimed actions in between statements

Python timeit.timeit do untimed actions in between statements


By : Mayur
Date : March 29 2020, 07:55 AM
Hope that helps You could produce number copies of the function, each with their independent lru_cache wrapper:
code :
setup = '''\
    from {name} import recursive_function as f
    f = iter([
        functools.lru_cache(maxsize=None)(recursive_function.__wrapped__)
        for _ in range({number})])
    n = {n}
    next_ = next
'''.format(name=__name__, number=number, n=n)
test = '''\
    recursive_function = next_(f)
    recursive_funcion.__globals__['recursive_funcion'] = recursive_funcion
    recursive_function(n)
'''
return timeit.timeit(test, setup, number=number)
what is the unit of timeit() from python3 timeit module function

what is the unit of timeit() from python3 timeit module function


By : Shibankar Debnath
Date : March 29 2020, 07:55 AM
hop of those help? As the documentation clearly says:
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