using raw string

Author: Kareem Zidane

src/cs50/sql.py

@@ -220,12 +220,12 @@ def execute(self, sql, *args, **kwargs):
             # In string literal
             # https://www.sqlite.org/lang_keywords.html
             if token.ttype in [sqlparse.tokens.Literal.String, sqlparse.tokens.Literal.String.Single]:
-                token.value = re.sub("(^'|\s+):", "\\1\\:", token.value)
+                token.value = re.sub("(^'|\s+):", r"\1\:", token.value)
 
             # In identifier
             # https://www.sqlite.org/lang_keywords.html
             elif token.ttype == sqlparse.tokens.Literal.String.Symbol:
-                token.value = re.sub("(^\"|\s+):", "\\1\\:", token.value)
+                token.value = re.sub("(^\"|\s+):", r"\1\:", token.value)
 
         # Join tokens into statement
         statement = "".join([str(token) for token in tokens])