Python string split camel case - version 2

Solution with filter()

pos=[]

pos.append(0)

def chkUcase(x):

    if x == x.upper():

        pos.append(myStr.index(x))

        return True

    else:

        return False

myStr = "myStringInPython"

#get only letters in uppercase

ucase = filter(chkUcase, myStr)

ucase=list(ucase)

print(ucase)

print("there are " + str(len(list(ucase))+1) + " words")

pos.append(len(myStr)) #char index = last index

words = []

for j in pos:

    if pos.index(j)>0:

        words.append(myStr[pos[pos.index(j)-1]:j])

print(words)