(Python) why does this not work?

[GreaseySleezy]

<fruits = ["apple", "banana", "cherry"]
x, y, z = fruits

print(fruits - "apple")>

[igormp]

You can't perform such math-like operation between a list and a regular string, what you want is to use the remove method from list

 

print(fruits.remove("apple"))

[shadow_ray]

15 minutes ago, GreaseySleezy said:

<fruits = ["apple", "banana", "cherry"]
x, y, z = fruits

print(fruits - "apple")>

Just read the error message. TypeError: unsupported operand type(s) for -: 'list' and 'str'

Meaning: you can't subtract a string from a list.

 

But you can remove it if you want:

fruits = ["apple", "banana", "cherry"]
x, y, z = fruits

print(fruits) #output is this: ["apple", "banana", "cherry"]
fruits.remove("apple")
print(fruits) #output is this:  ["banana", "cherry"]

 

[shadow_ray]

7 minutes ago, igormp said:

print(fruits.remove("apple"))

This won't work. The remove function doesn't return any value. It will just print None.

[igormp]

8 minutes ago, shadow_ray said:

This won't work. The remove function doesn't return any value. It will just print None.

Oops, my bad, always forget which methods return a new item and which ones modify in place 

[AnotherMax]

You can do that sort of behaviour with sets:

 

fruits = {"apple", "banana", "cherry"}
print(fruits - {"apple"})
# or to actually remove it.
fruits -= {"apple"}
print(fruits)