ENH: Add support for reading 110-format Stata dta files

Author: cmjcharlton

pandas/io/stata.py

@@ -91,7 +91,7 @@
 
 _version_error = (
     "Version of given Stata file is {version}. pandas supports importing "
-    "versions 105, 108, 111 (Stata 7SE), 113 (Stata 8/9), "
+    "versions 105, 108, 110 (Stata 7), 111 (Stata 7SE), 113 (Stata 8/9), "
     "114 (Stata 10/11), 115 (Stata 12), 117 (Stata 13), 118 (Stata 14/15/16),"
     "and 119 (Stata 15/16, over 32,767 variables)."
 )
@@ -1393,7 +1393,7 @@ def _get_seek_variable_labels(self) -> int:
 
     def _read_old_header(self, first_char: bytes) -> None:
         self._format_version = int(first_char[0])
-        if self._format_version not in [104, 105, 108, 111, 113, 114, 115]:
+        if self._format_version not in [104, 105, 108, 110, 111, 113, 114, 115]:
             raise ValueError(_version_error.format(version=self._format_version))
         self._set_encoding()
         self._byteorder = ">" if self._read_int8() == 0x1 else "<"
@@ -1408,7 +1408,7 @@ def _read_old_header(self, first_char: bytes) -> None:
         self._time_stamp = self._get_time_stamp()
 
         # descriptors
-        if self._format_version > 108:
+        if self._format_version > 110:
             typlist = [int(c) for c in self._path_or_buf.read(self._nvar)]
         else:
             buf = self._path_or_buf.read(self._nvar)

pandas/tests/io/data/stata/stata-compat-110.dta

@@ -2002,7 +2002,7 @@ def test_read_write_ea_dtypes(self, dtype_backend, temp_file, tmp_path):
         tm.assert_frame_equal(written_and_read_again.set_index("index"), expected)
 
 
-@pytest.mark.parametrize("version", [105, 108, 111, 113, 114])
+@pytest.mark.parametrize("version", [105, 108, 110, 111, 113, 114])
 def test_backward_compat(version, datapath):
     data_base = datapath("io", "data", "stata")
     ref = os.path.join(data_base, "stata-compat-118.dta")