What's a convenience function?
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In the timeit module there is the code below - what's a convenience function? I googled it and couldn't find a good answer:
def timeit(stmt="pass", setup="pass", timer=default_timer,
number=default_number, globals=None):
"""Convenience function to create Timer object and call timeit method."""
return Timer(stmt, setup, timer, globals).timeit(number)
python python-3.x
asked Nov 17 '18 at 0:59
user3124200user3124200
804
add a comment |
In the timeit module there is the code below - what's a convenience function? I googled it and couldn't find a good answer:
def timeit(stmt="pass", setup="pass", timer=default_timer,
number=default_number, globals=None):
"""Convenience function to create Timer object and call timeit method."""
return Timer(stmt, setup, timer, globals).timeit(number)
python python-3.x
asked Nov 17 '18 at 0:59
user3124200user3124200
804
7
A function defined for convenience.
– juanpa.arrivillaga
Nov 17 '18 at 1:00
1
@juanpa.arrivillaga: don't be so dismissive, there's more to it. As GreenCloakGuy's answer mentions, they help prevent litter your namespace with throwaway objects and temporaries. Which is especially important given Python's slightly non-standard scoping rules.
– smci
Nov 17 '18 at 1:27
add a comment |
In the timeit module there is the code below - what's a convenience function? I googled it and couldn't find a good answer:
def timeit(stmt="pass", setup="pass", timer=default_timer,
number=default_number, globals=None):
"""Convenience function to create Timer object and call timeit method."""
return Timer(stmt, setup, timer, globals).timeit(number)
python python-3.x
asked Nov 17 '18 at 0:59
user3124200user3124200
804
In the timeit module there is the code below - what's a convenience function? I googled it and couldn't find a good answer:
def timeit(stmt="pass", setup="pass", timer=default_timer,
number=default_number, globals=None):
"""Convenience function to create Timer object and call timeit method."""
return Timer(stmt, setup, timer, globals).timeit(number)
python python-3.x
python python-3.x
asked Nov 17 '18 at 0:59
user3124200user3124200
804
asked Nov 17 '18 at 0:59
user3124200user3124200
804
asked Nov 17 '18 at 0:59
user3124200user3124200
804
asked Nov 17 '18 at 0:59
user3124200user3124200
804
asked Nov 17 '18 at 0:59
user3124200user3124200
804
804
7
A function defined for convenience.
– juanpa.arrivillaga
Nov 17 '18 at 1:00
1
@juanpa.arrivillaga: don't be so dismissive, there's more to it. As GreenCloakGuy's answer mentions, they help prevent litter your namespace with throwaway objects and temporaries. Which is especially important given Python's slightly non-standard scoping rules.
– smci
Nov 17 '18 at 1:27
add a comment |
7
A function defined for convenience.
– juanpa.arrivillaga
Nov 17 '18 at 1:00
1
@juanpa.arrivillaga: don't be so dismissive, there's more to it. As GreenCloakGuy's answer mentions, they help prevent litter your namespace with throwaway objects and temporaries. Which is especially important given Python's slightly non-standard scoping rules.
– smci
Nov 17 '18 at 1:27
7
7
A function defined for convenience.
– juanpa.arrivillaga
Nov 17 '18 at 1:00
A function defined for convenience.
– juanpa.arrivillaga
Nov 17 '18 at 1:00
1
1
@juanpa.arrivillaga: don't be so dismissive, there's more to it. As GreenCloakGuy's answer mentions, they help prevent litter your namespace with throwaway objects and temporaries. Which is especially important given Python's slightly non-standard scoping rules.
– smci
Nov 17 '18 at 1:27
@juanpa.arrivillaga: don't be so dismissive, there's more to it. As GreenCloakGuy's answer mentions, they help prevent litter your namespace with throwaway objects and temporaries. Which is especially important given Python's slightly non-standard scoping rules.
– smci
Nov 17 '18 at 1:27
add a comment |
1 Answer
1
active
oldest
votes
It's a function that exists so you don't have to bother instantiating and keeping track of an object yourself. For example, in the timeit module, the only thing that can actually perform the functionality you want is the Timer object - but you as the programmer don't want to care about the lifecycle of that Timer, or bring it into your namespace. Hence, this timeit.timeit() function creates a Timer object relatively anonymously and calls timeit() on it, without you needing to keep track of that Timer object. It'll just do what you want it to and you don't have to worry about the details - convenience.
There are numerous other functions like this, that are essentially wrappers for instantiating a class and running a method - another example is subprocess.run(), which creates a Popen object that, again, the programmer doesn't have to keep track of.
See also the Wikipedia definition of a convenience function.
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
add a comment |
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1 Answer
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active
oldest
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votes
It's a function that exists so you don't have to bother instantiating and keeping track of an object yourself. For example, in the timeit module, the only thing that can actually perform the functionality you want is the Timer object - but you as the programmer don't want to care about the lifecycle of that Timer, or bring it into your namespace. Hence, this timeit.timeit() function creates a Timer object relatively anonymously and calls timeit() on it, without you needing to keep track of that Timer object. It'll just do what you want it to and you don't have to worry about the details - convenience.
There are numerous other functions like this, that are essentially wrappers for instantiating a class and running a method - another example is subprocess.run(), which creates a Popen object that, again, the programmer doesn't have to keep track of.
See also the Wikipedia definition of a convenience function.
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
add a comment |
It's a function that exists so you don't have to bother instantiating and keeping track of an object yourself. For example, in the timeit module, the only thing that can actually perform the functionality you want is the Timer object - but you as the programmer don't want to care about the lifecycle of that Timer, or bring it into your namespace. Hence, this timeit.timeit() function creates a Timer object relatively anonymously and calls timeit() on it, without you needing to keep track of that Timer object. It'll just do what you want it to and you don't have to worry about the details - convenience.
There are numerous other functions like this, that are essentially wrappers for instantiating a class and running a method - another example is subprocess.run(), which creates a Popen object that, again, the programmer doesn't have to keep track of.
See also the Wikipedia definition of a convenience function.
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
add a comment |
It's a function that exists so you don't have to bother instantiating and keeping track of an object yourself. For example, in the timeit module, the only thing that can actually perform the functionality you want is the Timer object - but you as the programmer don't want to care about the lifecycle of that Timer, or bring it into your namespace. Hence, this timeit.timeit() function creates a Timer object relatively anonymously and calls timeit() on it, without you needing to keep track of that Timer object. It'll just do what you want it to and you don't have to worry about the details - convenience.
There are numerous other functions like this, that are essentially wrappers for instantiating a class and running a method - another example is subprocess.run(), which creates a Popen object that, again, the programmer doesn't have to keep track of.
See also the Wikipedia definition of a convenience function.
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
It's a function that exists so you don't have to bother instantiating and keeping track of an object yourself. For example, in the timeit module, the only thing that can actually perform the functionality you want is the Timer object - but you as the programmer don't want to care about the lifecycle of that Timer, or bring it into your namespace. Hence, this timeit.timeit() function creates a Timer object relatively anonymously and calls timeit() on it, without you needing to keep track of that Timer object. It'll just do what you want it to and you don't have to worry about the details - convenience.
There are numerous other functions like this, that are essentially wrappers for instantiating a class and running a method - another example is subprocess.run(), which creates a Popen object that, again, the programmer doesn't have to keep track of.
See also the Wikipedia definition of a convenience function.
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
answered Nov 17 '18 at 1:16
Green Cloak GuyGreen Cloak Guy
3,4101721
3,4101721
add a comment |
add a comment |
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7
A function defined for convenience.
– juanpa.arrivillaga
Nov 17 '18 at 1:00
1
@juanpa.arrivillaga: don't be so dismissive, there's more to it. As GreenCloakGuy's answer mentions, they help prevent litter your namespace with throwaway objects and temporaries. Which is especially important given Python's slightly non-standard scoping rules.
– smci
Nov 17 '18 at 1:27