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Python 3 - time clock() Method
Description
The method clock() returns the current processor time as a floating point number expressed in seconds on Unix. 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.
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.
Syntax
Following is the syntax for clock() method −
time.clock()
Parameters
NA
Return Value
This method returns the current processor time as a floating point number expressed in seconds on Unix and in Windows it returns wall-clock seconds elapsed since the first call to this function, as a floating point number.
Example
The following example shows the usage of clock() method.
#!/usr/bin/python3 import time def procedure(): time.sleep(2.5) # measure process time t0 = time.clock() procedure() print (time.clock() - t0, "seconds process time") # measure wall time t0 = time.time() procedure() print (time.time() - t0, "seconds wall time")
Result
When we run the above program, it produces the following result −
2.4993855364299096 seconds process time 2.5 seconds wall time
Note − Not all systems can measure the true process time. On such systems (including Windows), clock usually measures the wall time since the program was started.