pyCreateTupleList

# Create a list of tuples from user input
# Sample input:-     (1, 4, -7), (4, -2, 5), (-6, 1, 9)

while True:
    valid = True
    userin = input("Enter a series of tuples: ")
    # Replace all white space in the tuple
    inlist = userin.split()
    userin = ''.join(inlist)
    # Now split on ")"  (which seems to be the most reliable indicator of end of tuple)
    tlist = userin.split(')')
    reslist = []

    for x, t in enumerate(tlist):
        t = t.strip(',')
        t = t.strip('(')
        nlist = t.split(',')
        tuplist = []
        for sn in nlist:
            if not sn:
                continue
            try:
                n = int(sn)
                tuplist.append(n)
            except:
                valid = False
                break
        if tuplist:
            reslist.append(tuple(tuplist))
    if valid:
        break
    print("Invalid input. Re-enter\n")
    continue

print(reslist)