explicitly clear linecache cache once parsing is finished

src/starfile/parser.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import linecache
 from collections import deque
 from io import StringIO
 from linecache import getline
@@ -45,6 +46,7 @@ def __init__(
         # parse file
         self.current_line_number = 0
         self.parse_file()
+        linecache.clearcache()
 
     @property
     def current_line(self) -> str:

tests/test_read_write_round_trip.py

@@ -1,3 +1,7 @@
+import time
+
+import pandas.testing
+
 from .constants import two_single_line_loop_blocks, postprocess
 
 import starfile
@@ -35,4 +39,16 @@ def test_round_trip_postprocess(tmp_path):
         if isinstance(_actual, pd.DataFrame):
             pd.testing.assert_frame_equal(_actual, _expected, atol=1e-6)
         else:
-            assert _actual == _expected
+            assert _actual == _expected
+
+
+def test_write_read_write_read():
+    filename = 'tmp.star'
+    df_a = pd.DataFrame({'a': [0, 1], 'b': [2, 3]})
+    starfile.write(df_a, filename)
+
+    df_b = pd.DataFrame({'c': [0, 1], 'd': [2, 3]})
+    starfile.write(df_b, filename)
+
+    df_b_read = starfile.read(filename)
+    pandas.testing.assert_frame_equal(df_b, df_b_read)