Weight conversion error in python

weight = float(input("weight: “))
unit = input(”(K)g or (L)bs: ")

if unit.upper() == “K”:
converted = weight*2.2
print("Weight in Lbs: " + str(converted))
else:
converted = weight/2.2
print("Weight in kgs: " + str(converted))
print(“Conversion done”)

Result shown:
weight: 10
(K)g or (L)bs: l
Traceback (most recent call last):
File “C:/Users/Admin/PycharmProjects/untitled2/tkinter”, line 2, in
unit = input("(K)g or (L)bs: ")
File “”, line 1, in
NameError: name ‘l’ is not defined