ENH: add option to save json without escaping forward slashes

doc/source/whatsnew/v3.0.0.rst

@@ -162,6 +162,7 @@ Other enhancements
 - :class:`pandas.api.typing.FrozenList` is available for typing the outputs of :attr:`MultiIndex.names`, :attr:`MultiIndex.codes` and :attr:`MultiIndex.levels` (:issue:`58237`)
 - :class:`pandas.api.typing.SASReader` is available for typing the output of :func:`read_sas` (:issue:`55689`)
 - Added :meth:`.Styler.to_typst` to write Styler objects to file, buffer or string in Typst format (:issue:`57617`)
+- Added functionality to support saving json without escaping forward slashes by adding to :meth:`DataFrame.to_json` (:issue:`61442`)
 - Added missing :meth:`pandas.Series.info` to API reference (:issue:`60926`)
 - :class:`pandas.api.typing.NoDefault` is available for typing ``no_default``
 - :func:`DataFrame.to_excel` now raises an ``UserWarning`` when the character count in a cell exceeds Excel's limitation of 32767 characters (:issue:`56954`)
@@ -228,7 +229,6 @@ Other enhancements
 - Support reading Stata 102-format (Stata 1) dta files (:issue:`58978`)
 - Support reading Stata 110-format (Stata 7) dta files (:issue:`47176`)
 - Switched wheel upload to **PyPI Trusted Publishing** (OIDC) for release-tag pushes in ``wheels.yml``. (:issue:`61718`)
--
 
 .. ---------------------------------------------------------------------------
 .. _whatsnew_300.notable_bug_fixes:

pandas/core/generic.py

@@ -2342,6 +2342,7 @@ def to_json(
         indent: int | None = None,
         storage_options: StorageOptions | None = None,
         mode: Literal["a", "w"] = "w",
+        escape_forward_slashes: bool = True,
     ) -> str | None:
         """
         Convert the object to a JSON string.
@@ -2429,6 +2430,9 @@ def to_json(
             Accepted args are 'w' (writing) and 'a' (append) only.
             mode='a' is only supported when lines is True and orient is 'records'.
 
+        escape_forward_slashes : bool, optional, default True
+            Remove backward slashes that get added in conversion to json.
+
         Returns
         -------
         None or str
@@ -2629,6 +2633,7 @@ def to_json(
             indent=indent,
             storage_options=storage_options,
             mode=mode,
+            escape_forward_slashes=escape_forward_slashes,
         )
 
     @final

pandas/io/json/_json.py

@@ -114,6 +114,7 @@ def to_json(
     indent: int = ...,
     storage_options: StorageOptions = ...,
     mode: Literal["a", "w"] = ...,
+    escape_forward_slashes: Literal[True, False] = ...,
 ) -> None: ...
 
 
@@ -133,6 +134,7 @@ def to_json(
     indent: int = ...,
     storage_options: StorageOptions = ...,
     mode: Literal["a", "w"] = ...,
+    escape_forward_slashes: Literal[True, False] = ...,
 ) -> str: ...
 
 
@@ -151,6 +153,7 @@ def to_json(
     indent: int = 0,
     storage_options: StorageOptions | None = None,
     mode: Literal["a", "w"] = "w",
+    escape_forward_slashes: Literal[True, False] = True,
 ) -> str | None:
     if orient in ["records", "values"] and index is True:
         raise ValueError(
@@ -218,6 +221,23 @@ def to_json(
         ) as handles:
             handles.handle.write(s)
     else:
+        if not escape_forward_slashes:
+            pattern = r"\/"
+            i = 1
+            new_s = ""
+            skip = False
+            for letter in s:
+                if skip is False:
+                    if letter + s[i] == pattern:
+                        new_s = new_s + r"/"
+                        skip = True
+                    else:
+                        new_s = new_s + letter
+                else:
+                    skip = False
+                if i < len(s) - 1:
+                    i = i + 1
+            return new_s
         return s
     return None
 

pandas/tests/io/json/test_pandas.py

@@ -2286,6 +2286,25 @@ def test_to_json_ea_null():
     assert result == expected
 
 
+def test_to_json_escape_forward_slashes():
+    df = DataFrame(
+        {
+            "path1": Series(["/escape/three/slashes"], dtype="str"),
+            "path2": Series(["/"], dtype="str"),
+            "path3": Series(["ending/"], dtype="str"),
+            "path4": Series(["/beginning"], dtype="str"),
+            "path5": Series(["/multiples//multiple"], dtype="str"),
+            "path6": Series(["//"], dtype="str"),
+        }
+    )
+    result = df.to_json(orient="records", escape_forward_slashes=False)
+    expected1 = '[{"path1":"/escape/three/slashes","path2":"/","path3":"ending/"'
+    expected2 = ',"path4":"/beginning","path5":"/multiples//multiple","path6":"//"}]'
+    expected = expected1 + expected2
+
+    assert result == expected
+
+
 def test_read_json_lines_rangeindex():
     # GH 57429
     data = """