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Say I got a unicode string from json which is u'a\tb', if I print it , I will get a b.But what I want now is print a string exactly as a\tb. How can I do it?
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Convert normal strings to raw strings with repr()Use the built-in function repr() to convert normal strings into raw strings. The string returned by repr() has ' at the beginning and the end. Using slices, you can get the string equivalent to the raw string.
Python raw string is created by prefixing a string literal with 'r' or 'R'. Python raw string treats backslash (\) as a literal character. This is useful when we want to have a string that contains backslash and don't want it to be treated as an escape character.
To make a string to raw string we have to add "R" before the string.
They are used for formatting strings. %s acts a placeholder for a string while %d acts as a placeholder for a number.
print(repr('a\tb')) repr() gives you the "representation" of the string rather than the printing the string directly.
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(Python 2)
print ur'a\tb' Note that in Python 3.x, u'' is equal to '', and the prefix ur is invalid.
Python 3:
print(r'a\tb') (Python 3)
print('a\\tb') If you want to get the raw repr of an existing string, here is a small function: (Python 3.6+)
def raw(string: str, replace: bool = False) -> str: """Returns the raw representation of a string. If replace is true, replace a single backslash's repr \\ with \.""" r = repr(string)[1:-1] # Strip the quotes from representation if replace: r = r.replace('\\\\', '\\') return r Examples:
>>> print(raw('1234')) 1234 >>> print('\t\n'); print('='*10); print(raw('\t\n')) ========== \t\n >>> print(raw('\r\\3')) \r\\3 >>> print(raw('\r\\3', True)) \r\3 Note this won't work for \N{...} Unicode escapes, only r'\N{...}' can. But I guess JSON doesn't have this :)
>>> print(raw('\N{PLUS SIGN}')) + If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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