[英]Remove the new line “\n” from base64 encoded strings in Python3?
I'm trying to make a HTTPS connection in Python3 and when I try to encode my username and password the base64
encodebytes
method returns the encoded value with a new line character at the end "\\n" and because of this I'm getting an error when I try to connect.我正在尝试在 Python3 中建立 HTTPS 连接,当我尝试对我的用户名和密码进行编码时,
base64
encodebytes
方法返回编码值,并在末尾添加一个换行符“\\n”,因此我得到了一个尝试连接时出错。
Is there a way to tell the base64
library not to append a new line character when encoding or what is the best way to remove this new line character?有没有办法告诉
base64
库在编码时不要附加换行符,或者删除这个换行符的最佳方法是什么? I tried using the replace
method but I get the following error:我尝试使用
replace
方法,但出现以下错误:
Traceback (most recent call last):
File "data_consumer.py", line 33, in <module>
auth_base64 = auth_base64.replace('\n', '')
TypeError: expected bytes, bytearray or buffer compatible object
My code:我的代码:
auth = b'username@domain.com:passWORD'
auth_base64 = base64.encodebytes(auth)
auth_base64 = auth_base64.replace('\n', '')
Any ideas?有任何想法吗? Thanks
谢谢
Instead of encodestring
consider using b64encode
.而不是
encodestring
考虑使用b64encode
。 Later does not add \\n
characters.后来不加
\\n
字符。 eg例如
In [11]: auth = b'username@domain.com:passWORD'
In [12]: base64.encodestring(auth)
Out[12]: b'dXNlcm5hbWVAZG9tYWluLmNvbTpwYXNzV09SRA==\n'
In [13]: base64.b64encode(auth)
Out[13]: b'dXNlcm5hbWVAZG9tYWluLmNvbTpwYXNzV09SRA=='
It produces identical encoded string except the \\n
它产生相同的编码字符串,除了
\\n
以下代码将工作
auth_base64 = auth_base64.decode('utf-8').replace('\n', '')
For Python 3 use:对于 Python 3 使用:
binascii.b2a_base64(cipher_text, newline=False)
For Python 2 use:对于 Python 2 使用:
binascii.b2a_base64(cipher_text)[:-1]
I concur with Mandar's observation that base64.xxxx_encode()
would produce output without line wrap \\n
.我同意
base64.xxxx_encode()
的观察,即base64.xxxx_encode()
将产生没有换行\\n
输出。
For those who want a more confident understanding than merely an observation, these are the official promise (sort of), that I can find on this topic.对于那些想要更自信的理解而不仅仅是观察的人来说,这些是我可以在这个主题上找到的官方承诺(有点)。 The Python 3 documentation does mention
base64.encode(...)
would add newlines after every 76 bytes of output. Python 3 文档确实提到
base64.encode(...)
会在每 76 个字节的输出后添加换行符。 Comparing to that, all other *_encode(...)
functions do not mention their linewrap behavior at all, which can argurably be considered as "no line wrap behavior".相比之下,所有其他
*_encode(...)
函数根本没有提到它们的换行行为,这可以说是“无换行行为”。 For what it's worth, the Python 2 documentation does not mention anything about line wrap at all.就其价值而言, Python 2 文档根本没有提及有关换行的任何内容。
I applied @Harsh hint and these two functions to encode and decode binary data work for my application.我应用了@Harsh 提示和这两个函数来为我的应用程序编码和解码二进制数据工作。 My requirement is to be able to use data URIs in HTML src elements and CSS @font-face statements to represent binary objects, specifically images, sounds and fonts.
我的要求是能够在 HTML src 元素和 CSS @font-face 语句中使用数据 URI 来表示二进制对象,特别是图像、声音和字体。 These functions work.
这些功能有效。
import binascii
def string_from_binary(binary):
return binascii.b2a_base64(binary, newline=False).decode('utf-8')
def string_to_binary(string):
return binascii.a2b_base64(string.encode('utf-8'))
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