Return the value in fractional seconds of a performance counter i e.
Python count wall clock time.
Return the value in fractional seconds of a performance counter i e.
Pythom time method clock returns the current processor time as a floating point number expressed in seconds on unix.
This function in combination with a loop serves as the python countdown timer.
Python s time library contains a predefined sleep function.
Also note that clock returns different things on different platforms.
Time clock was removed in python 3 8 because it had platform dependent behavior.
A prerequisite before we dive into the difference of measuring time in python is to understand various types of time in the computing world.
On windows this function returns wall clock seconds elapsed since the first call to this function as a floating point number based on the win32 function queryperformancecounter.
The first type of time is called cpu or execution time which measures how much time a cpu spent on executing a program.
To measure time elapsed during program s execution either use time clock or time time functions.
Time module in python provides various time related functions.
A clock with the highest available resolution to measure a short duration.
For the best measure of elapsed time since python 3 3 use time perf counter.
The precision of returned float value depends on the called c library function.
It does include time elapsed during sleep and is system wide.
Time clock method also call c library function of the same name to get the result.
On windows this function returns wall clock seconds elapsed since the first call to this function as a floating point number.
The python docs state that this function should be used for benchmarking purposes.
The second type of time is called wall clock time which measures the total time to execute a program in a computer.
Time clock method of time module in python is used to get the current processor time as a floating point number expressed in seconds.
But it s generally at least under 20ms.
The duration for which we want to delay the execution is passed as an argument to the sleep function in seconds.
As most of the functions defined in time module call corresponding c library function.
A clock with the highest available resolution to measure a short duration.
On unix return the current processor time as a floating point number expressed in seconds.
The precision depends on that of the c function of the same name but in any case this is the function to use for benchmarking python or timing algorithms.