Question

我正在学习如何读取/写入txt / dat文件的字符串，列表等。我想在我的代码中添加注释，以便我可以参考访问键的内容。所以这就是我所做的。

# Mode   Description
# rb     Read from a binary file. If the file doesn’t exist, Python will complain with an error.
# wb     Write to a binary file. If the file exists, its contents are overwritten. If the file doesn’t exist,
#        it’s created.
# ab     Append a binary file. If the file exists, new data is appended to it. If the file doesn’t exist, it’s
#        created.
# rb+    Read from and write to a binary file. If the file doesn’t exist, Python will complain with an
#        error.
# wb+    Write to and read from a binary file. If the file exists, its contents are overwritten. If the file
#        doesn’t exist, it’s created.
# ab+    Append and read from a binary file.

我有：

import pickle, shelve

print("Pickling lists.")
variety = ["sweet", "hot", "dill"]
shape = ["whole", "spear", "chip"]
brand = ["Claussen", "Heinz", "Vlassic"]

f = open("pickles1.dat", "wb")

pickle.dump(variety, f)
pickle.dump(shape, f)
pickle.dump(brand, f)
f.close()

print("\nUnpickling lists.")
f = open("pickles1.dat", "rb")
variety = pickle.load(f)
shape = pickle.load(f)
brand = pickle.load(f)

print(variety)
print(shape)
print(brand)
f.close()

当我运行它时，我收到以下错误：

SyntaxError：第10行文件PickleIt.py中以'\ x92'开头的非UTF-8代码，但未声明编码;有关详细信息，请参阅http://python.org/dev/peps/pep-0263/

我检查了链接，但我真的不明白，我以前没见过。

哦，道歉第10行是# rb

Answer 1

将所有’替换为'。它抱怨，因为您没有将编码类型添加到文件的开头。默认编码为utf-8，其中不允许使用这些字符。

您可以将此行添加到开头（注释之前），而不是替换：

# coding: iso-8859-1

（或其他编码，其中存在这些字符，例如latin-1。）

此行设置文件的编码并允许使用特殊字符。

Answer 2

将智能引号’替换为评论中的常规引用'。

Answer 3

这个角色似乎是问题'

Python - 尝试添加注释时出错

3 个答案: