ValueError: item is not in list

Question

I am making this simple code:

MyList=[]
valueA=1
valueB=2
valueC=3
MyList.append (valueA)
MyList.append (valueB)
MyList.append (valueC)
print (MyList)
print ([My         


        

Answer 1

Your mistake was that you put my_list into another anonymous list at the last line.It should be like this:

MyList=[]
valueA=1
valueB=2
valueC=3
MyList.append (valueA)
MyList.append (valueB)
MyList.append (valueC)
print (MyList)
print (MyList.index(valueB))

Output:

[1, 2, 3]
1