Why don't Python's assignment operators work if they're written with the equals sign on the left?

I’ve tried this, and I’d like to know more about why this doesn’t work. count += 1 works as intended, but count =+ 1 does not.

list = ["one", "two", "three"]
count = 0
for x in list:
    count =+ 1
    print(x)
    print(count)

The above example doesn’t work properly. However, the one below does.

list = ["one", "two", "three"]
count = 0
for x in list:
    count += 1
    print(x)
    print(count)

The intended output is to have it print each iteration all the way up to the number 3.

>Solution :

Because that’s not proper syntax. The operator is += ("plus equals"), not =+ ("equals plus").

count =+ 1 is the same thing as count = (+1), where + is a unary operator on 1.