[英]Convert utf-8 string to base64
I converted base64 str1= eyJlbXBsb3llciI6IntcIm5hbWVcIjpcInVzZXJzX2VtcGxveWVyXCIsXCJhcmdzXCI6XCIxMDQ5NTgxNjI4MzdcIn0ifQ
我转换了 base64 str1= eyJlbXBsb3llciI6IntcIm5hbWVcIjpcInVzZXJzX2VtcGxveWVyXCIsXCJhcmdzXCI6XCIxMDQ5NTgxNjI4MzdcIn0ifQ
to str2= {"employer":"{\\"name\\":\\"users_employer\\",\\"args\\":\\"104958162837\\"}"}
to str2= {"employer":"{\\"name\\":\\"users_employer\\",\\"args\\":\\"104958162837\\"}"}
with help of http://www.online-decoder.com/ru在http://www.online-decoder.com/ru 的帮助下
I want to convert str2 to str1 with help of python.我想在python的帮助下将str2转换为str1。 My code:我的代码:
import base64
data = """{"employer":"{"name":"users_employer","args":"104958162837"}"}"""
encoded_bytes = base64.b64encode(data.encode("utf-8"))
encoded_str = str(encoded_bytes, "utf-8")
print(encoded_str)
The code prints str3=代码打印 str3=
eyJlbXBsb3llciI6InsibmFtZSI6InVzZXJzX2VtcGxveWVyIiwiYXJncyI6IjEwNDk1ODE2MjgzNyJ9In0=
What should I change in code to print str1 instead of str3 ?我应该在代码中更改什么来打印str1而不是str3 ?
I tried我试过
{"employer":"{\"name\":\"users_employer\",\"args\":\"104958162837\"}"}
and和
{"employer":"{"name":"users_employer","args":"104958162837"}"}
but result is the same但结果是一样的
The problem is that \\"
is a python escape sequence for the single character "
.问题是\\"
是单个字符"
的python转义序列。 The fix is to keep the backslashes and use a raw string (note the "r" at the front).解决方法是保留反斜杠并使用原始字符串(注意前面的“r”)。
data = r"""{"employer":"{\"name\":\"users_employer\",\"args\":\"104958162837\"}"}"""
This will be the original string, except that python pads base64 numbers to 4 character multiples with the "=" sign.这将是原始字符串,除了 python 使用“=”符号将 base64 数字填充为 4 个字符的倍数。 Strip the padding and you have the original.去掉填充,你就有了原来的。
import base64
str1 = "eyJlbXBsb3llciI6IntcIm5hbWVcIjpcInVzZXJzX2VtcGxveWVyXCIsXCJhcmdzXCI6XCIxMDQ5NTgxNjI4MzdcIn0ifQ"
str1_decoded = base64.b64decode(str1 + "="*divmod(len(str1),4)[1]).decode("ascii")
print("str1", str1_decoded)
data = r"""{"employer":"{\"name\":\"users_employer\",\"args\":\"104958162837\"}"}"""
encoded_bytes = base64.b64encode(data.encode("utf-8"))
encoded_str = str(encoded_bytes.rstrip(b"="), "utf-8")
print("my encoded", encoded_str)
print("same?", str1 == encoded_str)
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