2

这是我的代码：

print "Hello, and welcome to the Slightly Interactive Autobiography of Robbie Wood."
print "Lets get started, shall we? What chapter would you like to read first?"
chapter = raw_input("Please type either 'Chapter 1', 'Chapter 2' or 'Chapter 3': ")

if chapter = "Chapter 1":
    print "Chapter 1"
    print chapter_one

else chapter = "Chapter 2":
    print "Chapter 2"
    print chapter_two

elif chapter = "Chapter 3":
    print "Chapter 3"
    print chapter_three

elif:
    chapters = raw_input("Please type either 'Chapter 1', 'Chapter 2', or 'Chapter 3': ")

# Variables - Chapters
chapter_one = "text here..."
chapter_two = "text here..."
chapter_three = "text here..."

这是来自终端的确切错误消息：

Last login: Fri Sep  7 17:22:59 on ttys000
Robbies-MacBook-Pro:~ robbiewood$ /var/folders/y6/kx37qgbs34124ztdgb4tphs00000gn/T/Cleanup\ At\ Startup/autobiography-368756862.498.py.command ; exit;
File "/private/var/folders/y6/kx37qgbs34124ztdgb4tphs00000gn/T/Cleanup At Startup/autobiography-368756862.497.py", line 9
    else chapter = "Chapter 2":
               ^
SyntaxError: invalid syntax
logout

[Process completed]

有人可以帮我解决这个问题吗？我是一名初学者 Python 编码器，我正在为一个学校项目编写一个“稍微互动的自传”。

4

4 回答 4

7

第二组应该是一个elif，最后一个是你的else情况，它们都应该==用于相等比较，而不是=变量赋值：

# Define these variables *before* you use them...
# Variables - Chapters
chapter_one = "text here..."
chapter_two = "text here..."
chapter_three = "text here..."

if chapter == "Chapter 1":
    print "Chapter 1"
    print chapter_one

# This one should be an elif
elif chapter == "Chapter 2":
    print "Chapter 2"
    print chapter_two

elif chapter == "Chapter 3":
    print "Chapter 3"
    print chapter_three
# And the last one is an else
else:
    chapters = raw_input("Please type either 'Chapter 1', 'Chapter 2', or 'Chapter 3': ")
于 2012-09-08T00:35:25.830 回答
1

首先，您使用 来检查两件事是否相等==，而不仅仅是=为分配保留。其次，你应该用 改变你的第二个else，用改变你elif的最后elif一个else。此外，您需要在使用chapter_xxx变量之前定义它们。尝试这个：

print "Hello, and welcome to the Slightly Interactive Autobiography of Robbie Wood."
print "Lets get started, shall we? What chapter would you like to read first?"
chapter = raw_input("Please type either 'Chapter 1', 'Chapter 2' or 'Chapter 3': ")

chapter_one = "text here..."
chapter_two = "text here..."
chapter_three = "text here..."

if chapter == "Chapter 1":
    print "Chapter 1"
    print chapter_one

elif chapter == "Chapter 2":
    print "Chapter 2"
    print chapter_two

elif chapter == "Chapter 3":
    print "Chapter 3"
    print chapter_three

else:
    chapters = raw_input("Please type either 'Chapter 1', 'Chapter 2', or 'Chapter 3': ")
于 2012-09-08T00:38:12.083 回答
0

在您的 if/elif 语句中替换=为。==

于 2012-09-08T00:35:19.027 回答
0

有2个问题：

(1)您在-statement的表达式中使用了赋值运算符 ( =) 而不是布尔比较运算符 ( )。==if

您在if-statement 中的表达式必须评估为Trueor False，您不能在那里进行分配。

（2） 另外，你不能elif在你的 -statement 的末尾有一个if，它应该是

 if BooleanExpr:
    ...
 elif BooleanExpr:
    ...
 elif BooleanExpr:
    ...
 else:
    ...

即，如果你要使用elif它必须if在 any 之后和之前else。

有关更多信息，请参阅Python 文档。

于 2012-09-08T00:35:29.807 回答