How to convert string containing unicode escape \u#### to utf-8 string

问题

I am trying this since morning.

My sample.txt

choice = \u9078\u629e

Code:

with open('sample.txt', encoding='utf-8') as f:
    for line in f:
        print(line)
        print("選択" in line)
        print(line.encode('utf-8').decode('utf-8'))
        print(line.encode().decode('utf-8'))
        print(line.encode('utf-8').decode())
        print(line.encode().decode('unicode-escape').encode("latin-1").decode('utf-8')) # as suggested.

out:
choice = \u9078\u629e
False
choice = \u9078\u629e
choice = \u9078\u629e
choice = \u9078\u629e
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 9-10: ordinal not in range(256)

When I do this in ipython qtconsole:

In [29]: "choice = \u9078\u629e"
Out[29]: 'choice = 選択'

So the question is how can I read the text file containing the unicode escaped string like \u9078\u629e (I don't know exactly what it's called) and convert it to utf-8 like 選択?

回答1:

If you read it from a file, just give the encoding when opening:

with open('test.txt', encoding='unicode-escape') as f:    
    a = f.read()
print(a)

# choice = 選択

with test.txt containing:

choice = \u9078\u629e

If you already had your text in a string, you could have converted it like this:

a = "choice = \\u9078\\u629e"
a.encode().decode('unicode-escape')
# 'choice = 選択'

来源：https://stackoverflow.com/questions/49315872/how-to-convert-string-containing-unicode-escape-u-to-utf-8-string