Python String Escaping and Raw Strings

Python String Escaping

Python provides a rich set of string types, each with different escaping behaviors. Understanding these options lets you choose the cleanest approach for any situation.

Standard Escape Sequences

Python recognizes these escape sequences in regular strings:

\\'   → single quote
\\"   → double quote
\\\\   → backslash
\\n   → newline
\\r   → carriage return
\\t   → tab
\\b   → backspace
\\f   → form feed
\\a   → bell/alert
\\0   → null character
\\ooo → octal character (up to 3 digits)
\\xhh → hex character (exactly 2 digits)
\\uxxxx   → Unicode BMP (exactly 4 hex digits)
\\Uxxxxxxxx → Unicode full range (exactly 8 hex digits)
\\N{name}  → Unicode character by name

Raw Strings

Prefixing a string with r disables escape sequence processing:

path = r"C:\Users\name\Documents"   # backslashes are literal
regex = r"\d+\.\d+"                   # no double-escaping needed

Raw strings cannot end with an odd number of backslashes — r"path\" is a syntax error because the parser still uses backslash to escape the delimiter during tokenization.

Triple-Quoted Strings

Triple quotes (""" or ''') allow multiline content without \n:

sql = """
SELECT *
FROM users
WHERE name = 'O\'Brien'
"""

Escaping still works inside triple-quoted strings; they simply do not require escaping newlines.

F-String Escaping

In f-strings, curly braces are the interpolation delimiters. To include literal braces, double them:

f"{{not interpolated}}"   # output: {not interpolated}
f"Value: {x}"             # output: Value: 42

Backslash escapes work normally inside f-strings but cannot appear inside the {} expression.

Bytes vs. Strings

Python 3 distinguishes str (Unicode) from bytes. Byte strings (b"...") only accept ASCII characters and \xHH escapes — no \u or \N{}.

repr() for Debugging

repr() returns a string with all special characters escaped, making it invaluable for debugging:

>>> repr("line\n\ttab")
"'line\\n\\ttab'"