diff --git a/工程化/类型申明/tf-24.py b/工程化/类型申明/24A.py
similarity index 100%
rename from 工程化/类型申明/tf-24.py
rename to 工程化/类型申明/24A.py
diff --git a/工程化/类型申明/24B.py b/工程化/类型申明/24B.py
new file mode 100644
index 0000000..6a55900
--- /dev/null
+++ b/工程化/类型申明/24B.py
@@ -0,0 +1,16 @@
+import cppy.cp_util as util
+
+
+def extract_words(path_to_file:str) -> list:    
+    return util.extract_file_words(path_to_file)
+
+def frequencies( word_list:list ) -> dict :
+    return util.get_frequencies(word_list)
+
+def sort(word_freq:dict) -> list : 
+    return util.sort_dict(word_freq)
+
+
+if __name__ == "__main__":
+    word_freqs = sort( frequencies(extract_words( util.testfilepath )) )
+    util.print_word_freqs(word_freqs)
\ No newline at end of file