Python“SyntaxError：无效语法”为什么？

Question

My formatting is terrible. Screenshot is here:

n = int(input("enter the number of Fibonacci sequence you want. ")
n1 = 0
n2 = 1
count = 0

if n <= 0:
  print("please enter a postive integer")
elif n == 1:
  print("Fibonacci sequence:")
  print(n1)

else:
  while count < n:
     print(n1)
     nth = n1 + n2
     n1 = n2
     n2 = nth
     count = count + 1

I cannot figure out why do I get this error:

 File "<ipython-input-68-9c2ad055a726>", line 3
    n1 = 0
     ^
SyntaxError: invalid syntax

Answer 1

我猜第一行缺少一个 ')'，这是一个问题。

Answer 2

When such error arises, do check for the preceding line also. There are very high chances of error being in the preceding line, as in this case. There's a ) missing in the input line. You closed 1 ) for the input() function, but did not close for int constructor.