优化查询效率

.gitignore

@@ -1,3 +1,4 @@
 .idea/
 __pycache__/
 *.log
+/dup.txt

db.py

@@ -25,6 +25,15 @@ def get_md5_by_path(_path):
     return r
 
 
+def get_path_by_cate(_cate):
+    get_path_sql = "SELECT SUBSTRING(path,3) as path FROM files WHERE cate = %s;"
+    db_cursor.execute(get_path_sql, (_cate,))
+    r = db_cursor.fetchall()
+    file_list = [f['path'] for f in r]
+    print('get_path_by_cate查询完成')
+    return file_list
+
+
 def is_exist(_md5):
     is_exist_sql = "SELECT * FROM files WHERE md5 = %s;"
     db_cursor.execute(is_exist_sql, (_md5,))

main.py

@@ -1,12 +1,13 @@
 from getFiles import get_file_list
 from getMd5 import get_file_md5
 from db import *
+from time import time as t
 
 
 def main_process():
-    disk = "Myxx_Backup_16T_2"
-    cate = "hj"
-    path = r"Y:\hj"
+    disk = "Myxx_Backup_16T_3"
+    cate = "leshe"
+    path = r"X:\leshe"
 
     _exist_file_list = []
 
@@ -14,14 +15,27 @@ def main_process():
         print("检查参数")
         return
 
+    print(f"开始获取文件列表：{t()}")
     file_list = get_file_list(path)
-    file_list_len = len(file_list)
-    for (i, f) in enumerate(file_list):
-        print(f"({i+1}/{file_list_len}) - 开始处理: {f}")
-        if md5 := get_md5_by_path(f):
-            print(f"请注意！！！文件的md5({md5})已经存在: {f}")
+    print(f"结束获取文件列表：{t()}")
+
+    unchecked_list = []
+    cate_file_list = get_path_by_cate(cate)
+
+    total_len = len(file_list)
+    for (index, file) in enumerate(file_list):
+        if file[2:] in cate_file_list:
+            print(f"{index}/{total_len}文件已经存在: {file}")
         else:
+            print(f"{index}/{total_len}未处理文件: {file}")
+            unchecked_list.append(file)
+
+    file_list_len = len(unchecked_list)
+    for (i, f) in enumerate(unchecked_list):
+        print(f"({i+1}/{file_list_len}) - 开始处理: {f} - {t()}")
+        t_start = t()
         md5 = get_file_md5(f)
+        print(f"完成MD5计算耗时：{t()-t_start}")
         if exist := is_exist(md5):
             _exist_file_list.append(f)
             print(f"重复文件！！！md5为({md5})的文件已经存在，文件路径:{exist['path']} -> {f}")
@@ -33,5 +47,11 @@ def main_process():
 
 if __name__ == "__main__":
     exist_file_list = main_process()
+    if len(exist_file_list) > 0:
+        with open('dup.txt', 'w', encoding='utf-8') as dup_file:
             for ef in exist_file_list:
                 print(ef)
+                dup_file.write(ef)
+            dup_file.close()
+    else:
+        print("没有找到重复文件")