python substring from end
# string [start:end:step]
string = "freeCodeCamp"
print(string[0:len(string)-1]) # freeCodeCam
print(string[0:5]) # freeC
print(string[2:6]) # eeCo
print(string[-1]) # p
print(string[-5:]) # eCamp
print(string[1:-4]) # reeCode
print(string[-5:-2]) # eCa
print(string[::2]) # feCdCm