diff --git a/PyPI/setup.cfg b/PyPI/setup.cfg
index fc83c1c..fe36a2d 100644
--- a/PyPI/setup.cfg
+++ b/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.0.130
+version = 0.0.131
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/PyPI/src/guan.egg-info/PKG-INFO b/PyPI/src/guan.egg-info/PKG-INFO
index 88e7f20..7e1e599 100644
--- a/PyPI/src/guan.egg-info/PKG-INFO
+++ b/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: guan
-Version: 0.0.130
+Version: 0.0.131
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/PyPI/src/guan/__init__.py b/PyPI/src/guan/__init__.py
index ef0dd4a..3dbf92c 100644
--- a/PyPI/src/guan/__init__.py
+++ b/PyPI/src/guan/__init__.py
@@ -2,7 +2,7 @@
 
 # With this package, you can calculate band structures, density of states, quantum transport and topological invariant of tight-binding models by invoking the functions you need. Other frequently used functions are also integrated in this package, such as file reading/writing, figure plotting, data processing.
 
-# The current version is guan-0.0.130, updated on September 08, 2022.
+# The current version is guan-0.0.131, updated on September 08, 2022.
 
 # Installation: pip install --upgrade guan
 
@@ -2564,10 +2564,11 @@ def write_file_list_in_markdown(directory, filename='a', reverse_positive_or_neg
             for filename2 in filenames2[::reverse_positive_or_negative]:
                 filename2_with_path = os.path.join(directory, filename1, filename2) 
                 if os.path.isfile(filename2_with_path):
-                    if hide_file_type == None:
-                        f.write('+ '+str(filename2)+'\n')
-                    else:
-                        f.write('+ '+str(os.path.splitext(filename2)[0])+'\n')
+                    if os.path.splitext(filename2)[1] not in banned_type:
+                        if hide_file_type == None:
+                            f.write('+ '+str(filename2)+'\n')
+                        else:
+                            f.write('+ '+str(os.path.splitext(filename2)[0])+'\n')
                 else: 
                     i0 += 1
                     if starting_from_h1 == None:
@@ -2582,10 +2583,11 @@ def write_file_list_in_markdown(directory, filename='a', reverse_positive_or_neg
                     for filename3 in filenames3[::reverse_positive_or_negative]:
                         filename3_with_path = os.path.join(directory, filename1, filename2, filename3) 
                         if os.path.isfile(filename3_with_path): 
-                            if hide_file_type == None:
-                                f.write('+ '+str(filename3)+'\n')
-                            else:
-                                f.write('+ '+str(os.path.splitext(filename3)[0])+'\n')
+                            if os.path.splitext(filename3)[1] not in banned_type:
+                                if hide_file_type == None:
+                                    f.write('+ '+str(filename3)+'\n')
+                                else:
+                                    f.write('+ '+str(os.path.splitext(filename3)[0])+'\n')
                         else:
                             j0 += 1
                             if starting_from_h1 == None:
@@ -2599,10 +2601,11 @@ def write_file_list_in_markdown(directory, filename='a', reverse_positive_or_neg
                             for filename4 in filenames4[::reverse_positive_or_negative]:
                                 filename4_with_path = os.path.join(directory, filename1, filename2, filename3, filename4) 
                                 if os.path.isfile(filename4_with_path):
-                                    if hide_file_type == None:
-                                        f.write('+ '+str(filename4)+'\n')
-                                    else:
-                                        f.write('+ '+str(os.path.splitext(filename4)[0])+'\n')
+                                    if os.path.splitext(filename4)[1] not in banned_type:
+                                        if hide_file_type == None:
+                                            f.write('+ '+str(filename4)+'\n')
+                                        else:
+                                            f.write('+ '+str(os.path.splitext(filename4)[0])+'\n')
                                 else: 
                                     if starting_from_h1 == None:
                                         f.write('#')
@@ -2612,10 +2615,11 @@ def write_file_list_in_markdown(directory, filename='a', reverse_positive_or_neg
                                     for filename5 in filenames5[::reverse_positive_or_negative]:
                                         filename5_with_path = os.path.join(directory, filename1, filename2, filename3, filename4, filename5) 
                                         if os.path.isfile(filename5_with_path): 
-                                            if hide_file_type == None:
-                                                f.write('+ '+str(filename5)+'\n')
-                                            else:
-                                                f.write('+ '+str(os.path.splitext(filename5)[0])+'\n')
+                                            if os.path.splitext(filename5)[1] not in banned_type:
+                                                if hide_file_type == None:
+                                                    f.write('+ '+str(filename5)+'\n')
+                                                else:
+                                                    f.write('+ '+str(os.path.splitext(filename5)[0])+'\n')
                                         else:
                                             if starting_from_h1 == None:
                                                 f.write('#')