Fix python check isnull. (#458)

* fix python is null error.

* fix compile dist.

Author: ColinLeeo

.gitignore

@@ -38,7 +38,7 @@ python/tests/*.tsfile
 
 cpp/cmake-build-debug-mingw/
 cpp/third_party/googletest-release-1.12.1.zip
-
+cpp/third_party/zlib-1.2.13/zconf.h
 .vscode/
 
 build/*

python/requirements.txt

@@ -21,5 +21,5 @@ cython==3.0.10
 numpy==1.26.4
 pandas==2.2.2
 setuptools==70.0.0
-wheel
+wheel==0.45.1
 

python/setup.py

@@ -24,7 +24,7 @@
 import shutil
 import os
 
-version = "2.1.0.dev"
+version = "2.1.0.dev0"
 system = platform.system()
 
 def copy_tsfile_lib(source_dir, target_dir, suffix):

python/tests/test_write_and_read.py

@@ -62,6 +62,8 @@ def test_row_record_write_and_read():
 
 def test_tablet_write_and_read():
     try:
+        if os.path.exists("record_write_and_read.tsfile"):
+            os.remove("record_write_and_read.tsfile")
         writer = TsFileWriter("tablet_write_and_read.tsfile")
         measurement_num = 30
         for i in range(measurement_num):
@@ -124,6 +126,11 @@ def test_table_writer_and_reader():
                 while result.next():
                     cur_time = result.get_value_by_name("time")
                     assert result.get_value_by_name("device") == "device" + str(cur_time)
+                    assert result.is_null_by_name("device") == False
+                    assert result.is_null_by_name("value") == False
+                    assert result.is_null_by_index(1) == False
+                    assert result.is_null_by_index(2) == False
+                    assert result.is_null_by_index(3) == False
                     assert result.get_value_by_name("value") == cur_time * 100.0
                     cur_line = cur_line + 1
                 assert cur_line == 11

python/tsfile/tsfile_reader.pyx

@@ -208,15 +208,15 @@ cdef class ResultSetPy:
             raise IndexError(
                 f"Column index {index} out of range (column count: {len(self.metadata.column_list)})"
             )
-        return tsfile_result_set_is_null_by_index(self.result, index - 1)
+        return tsfile_result_set_is_null_by_index(self.result, index)
 
     def is_null_by_name(self, name : str):
         """
         Checks whether the field with the specified column name in the result set is null.
         """
         self.check_result_set_invalid()
         ind = self.metadata.get_column_name_index(name, self.is_tree)
-        return self.is_null_by_index(ind + 1)
+        return self.is_null_by_index(ind)
 
     def check_result_set_invalid(self):
         if not self.valid: