I want to read lines of a text-file that include emojis and non ASCII-characters and finally print them out. The problem is that I either can print the emoji glyphe correctly or the non ASCII-character (eg ü).
Line in text-file (with UTF-8 format):
I am tired. - Ich bin müde \U0001F4A4
Code to read:
with open(path_txt,"r", encoding="unicode_escape") as file:
content = file.readlines()
print(content[0])
'unicodeescape' codec can't decode bytes in position 0-1: truncated \UXXXXXXXX escape
I also tried encoding="raw_unicode_escape". As a beginner I don't understand the whole unicode topic. Thanks for your help/workarounds!!
Similar/Same Problem here (04/2014): https://bugs.python.org/issue21331
It seems that the content is in some mixture of escapes (for the emoji) and UTF-8-encoded characters (for "ü").
It's not entirely clear from your post, but I assume if you would read the file in binary mode ( open(path, 'rb')
) and print the first line, you would see this:
b'm\xc3\xbcde \\U0001f4a4'
This means that "ü" was encoded with UTF-8, but the emoji was escaped. Note: You see escape sequences for "ü" too, but that's just the representation. Try len(b'\xc3')
and you'll see that this is actually a length-1 byte string. b'\\U0001f4a4'
on the other hand is really an escape sequence with length 10.
Now the "unicode-escape" sequence does not expect exactly this format. It interprets unescaped non-ASCII characters as Latin-1 – that's why you see garbled characters instead of "ü" when using this codec:
>>> b'm\xc3\xbcde \\U0001f4a4'.decode('unicode-escape')
'müde 💤'
But if "unicode-escape" wants Latin-1, we can give it, First: we decode with UTF-8 to get "ü" right:
>>> b'm\xc3\xbcde \\U0001f4a4'.decode('utf8')
'müde \\U0001f4a4'
This doesn't touch the emoji escape, since it's all ASCII. Characters from the ASCII range are encoded identically for Latin-1 and UTF-8 (and ASCII).
Now we encode with Latin-1:
>>> b'm\xc3\xbcde \\U0001f4a4'.decode('utf8').encode('latin1')
b'm\xfcde \\U0001f4a4'
and this is something the "unicode-escape" codec understands:
>>> b'm\xc3\xbcde \\U0001f4a4'.decode('utf8').encode('latin1').decode('unicode-escape')
'müde 💤'
In your setup, you can defer the first decode
step to the internal processing of open()
:
with open(path_txt, "r", encoding="utf-8") as file:
for line in file:
line = line.encode('latin1').decode('unicode-escape')
# do something with line
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