python的语法问题

[CopyReg]

#!/usr/bin/env python
# Filename: if.py

number=23
guess=int(input(('Enter an integer : '))

if guess==number:
	print ('Congratulations, you guessed it.') # New block starts here
	print ("(but you do not win any prizes!)") # New block ends here
elif guess<number:
	print ('No, it is a little higher than that') # Another block
	# You can do whatever you want in a block ...
else:
	print ('No, it is a little lower than that')
	# you must have guess > number to reach here

print ('Done')
# This last statement is always executed, after the if statement is executed

这些代码我是在http://woodpecker.org.cn/abyteofpython_cn/chinese/ch06s02.html复制下来的
我把raw_input替换成了input（我的python是3.1.2的）

可是我运行的时候出现了错误
if guess==number:
^
SyntaxError: invalid syntax

请问错误出在哪里呢？那个教程好像是2.X的，难道因为我用的是3.X所以出错了吗？

[angel_su]

guess=int(input(('Enter an integer : '))有问题，少一个')'吧，所以后面语句看起来没问题也会报语法错误...

[angel_su]

没细看，应该是多了一个'('，guess=int(input('Enter an integer : '))

[josephwuxiaameng]

大哥你int的括号没对齐！

[CopyReg]

[Quote=引用 3 楼 josephwuxiaameng 的回复:]

大哥你int的括号没对齐！
[/Quote]

真的少个哦