Please help me with multiply statements error? (Python) : Can anyone review these lines of code and explain me what's wrong? why do I get the  multiply statements error?

listOrigin = [10, -15, 3, 8, 0, 9, -6, 13, -1, 5]
    listMask = []
    for item in listOrigin:
    if item > 0:
        listMask.append(1)
    elif item < 0:
        listMask.append(-1)
    else:
        listMask.append(0)

print(listOrigin)
print(listMask)
SyntaxError: multiple statements found while compiling a single statement