python remove last 4 characters from string

str =  "string"
str = str[:-1]  # Returns "strin"

st =  "abcdefghij"
st = st[:-1]  # Returns string with last character removed

your_string = "hello"
your_string = your_string[:-1] # this removes the last character from your string 

foo = foo[:-n]

str = "abc"
str = str[:-1]
print(str)

>>> ab

st =  "abcdefghij"
st = st[:-1]

st="velm"
str = str[:-1]