无法编码/解码pprint输出。

This question is based on a side-effect of that one.

这个问题是基于那一个的副作用。

My .py files are all have # -*- coding: utf-8 -*- encoding definer on the first line, like my api.py

我的.py文件都有# -*-编码:第一行的utf-8 -*编码定义符，就像我的api.py一样。

As I mention on the related question, I use HttpResponse to return the api documentation. Since I defined encoding by:

正如我在相关问题上提到的，我使用HttpResponse来返回api文档。因为我定义了编码:

HttpResponse(cy_content, content_type='text/plain; charset=utf-8')

Everything is ok, and when I call my API service, there are no encoding problems except the string formed from a dictionary by pprint

一切都很好，当我调用我的API服务时，除了通过pprint从字典中生成的字符串外，没有任何编码问题。

Since I am using Turkish characters in some values in my dict, pprint converts them to unichr equivalents, like:

由于我在我的字典中使用的是土耳其字符，pprint将它们转换为unichr等价类，比如:

API_STATUS = {
    1: 'müşteri',
    2: 'some other status message'
}

my_str = 'Here is the documentation part that contains Turkish chars like işüğçö'
my_str += pprint.pformat(API_STATUS, indent=4, width=1)
return HttpRespopnse(my_str, content_type='text/plain; charset=utf-8')

And my plain text output is like:

我的纯文本输出是:

Here is the documentation part that contains Turkish chars like işüğçö

{
    1: 'm\xc3\xbc\xc5\x9fteri',
    2: 'some other status message'
}

I try to decode or encode pprint output to different encodings, with no success... What is the best practice to overcome this problem

我尝试解码或编码pprint输出到不同的编码，没有成功…克服这个问题的最佳实践是什么?

2 个解决方案

#1

pprint appears to use repr by default, you can work around this by overriding PrettyPrinter.format:

pprint在默认情况下使用repr，您可以通过覆盖PrettyPrinter.format来解决这个问题。

# coding=utf8

import pprint

class MyPrettyPrinter(pprint.PrettyPrinter):
    def format(self, object, context, maxlevels, level):
        if isinstance(object, unicode):
            return (object.encode('utf8'), True, False)
        return pprint.PrettyPrinter.format(self, object, context, maxlevels, level)


d = {'foo': u'işüğçö'}

pprint.pprint(d)              # {'foo': u'i\u015f\xfc\u011f\xe7\xf6'}
MyPrettyPrinter().pprint(d)   # {'foo': işüğçö}

#2

You should use unicode strings instead of 8-bit ones:

您应该使用unicode字符串，而不是8位的字符串:

API_STATUS = {
    1: u'müşteri',
    2: u'some other status message'
}

my_str = u'Here is the documentation part that contains Turkish chars like işüğçö'
my_str += pprint.pformat(API_STATUS, indent=4, width=1)

The pprint module is designed to print out all possible kind of nested structure in a readable way. To do that it will print the objects representation rather then convert it to a string, so you'll end up with the escape syntax wheather you use unicode strings or not. But if you're using unicode in your document, then you really should be using unicode literals!

pprint模块被设计成以一种可读的方式打印出所有可能的嵌套结构。要做到这一点，它将打印对象表示，而不是将其转换为字符串，这样您就会得到使用unicode字符串的转义语法。但是如果您在文档中使用unicode，那么您确实应该使用unicode文字!

Anyway, thg435 has given you a solution how to change this behaviour of pformat.

无论如何，thg435给了您一个解决方案，如何改变pformat的这种行为。

#1