Hello,
I try to learn more complex structures. But i still struggle…
def quad(x):
erg = x * x
return erg
# Funktion mit mehr als einem Parameter
def summe(a,b,c):
erg = a + b + c
return erg
# Funktion mit einem Parameter mehrmals aufrufen
z = map(quad, [4, 2.5, -1.5])
# Jedes Ergebnis ausgeben
x = []
for i in z:
x.append(i)
# Funktion mit mehr als einem Parameter mehrmals aufrufen
z = map(summe, [3, 1.2, 2], [4.8, 2], [5, 0.1, 9])
# Jedes Ergebnis ausgeben
y = []
for a in z:
y.append(a)
OUT = x,y
Can i write like this? Is there a missing library for these buildIn functions?
KR
Andreas
@Draxl_Andreas
at the line z = map(summe, [3, 1.2, 2], [4.8, 2], [5, 0.1, 9])
lists are not uniform Python trying to add 2 + None + 9
an alternative
def quad(x):
erg = x * x
return erg
def summe(*args):
erg = sum(x for x in args if x is not None)
return erg
z = map(quad, [4, 2.5, -1.5])
x = []
for i in z:
x.append(i)
z = map(summe, [3, 1.2, 2], [4.8, 2], [5, 0.1, 9])
y = []
for a in z:
y.append(a)
OUT = x,y
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…you mean i have to replace the addition (sum) with a ForLoop. thats the only way to sum up elements - instead i have to “collect” them!
x for x in args if x is not None # writing - style ?
I don`t know this writing style, where do you get this kind of “coding” is there also a link for optimising codewriting in python?
this is a solution the goal is to check if there is a None value before making the addition
it’s a List comprehension
1 Like