Use meanful variable name

Author: PeterDing

baidupcs_py/commands/upload.py

@@ -421,21 +421,18 @@ def callback_for_slice(idx: int, monitor: MultipartEncoderMonitor):
     slice256k_md5 = ""
     content_md5 = ""
     content_crc32 = 0
-    io_len = 0
 
     if encrypt_type == EncryptType.No and encrypt_io_len > 256 * constant.OneK:
         # Rapid Upload
-        slice256k_md5, content_md5, content_crc32, io_len = rapid_upload_params(
-            encrypt_io
-        )
+        slice256k_md5, content_md5, content_crc32, _ = rapid_upload_params(encrypt_io)
         ok = _rapid_upload(
             api,
             localpath,
             remotepath,
             slice256k_md5,
             content_md5,
             content_crc32,
-            io_len,
+            encrypt_io_len,
             local_ctime,
             local_mtime,
             ondup,
@@ -532,7 +529,7 @@ def upload_slice(item: Tuple[int, IO]):
                 slice256k_md5,
                 content_md5,
                 content_crc32,
-                io_len,
+                encrypt_io_len,
                 encrypt_password=encrypt_password,
                 encrypt_type=encrypt_type.value,
                 user_id=user_id,
@@ -676,21 +673,18 @@ def callback_for_slice(monitor: MultipartEncoderMonitor):
     slice256k_md5 = ""
     content_md5 = ""
     content_crc32 = 0
-    io_len = 0
 
     if encrypt_type == EncryptType.No and encrypt_io_len > 256 * constant.OneK:
         # Rapid Upload
-        slice256k_md5, content_md5, content_crc32, io_len = rapid_upload_params(
-            encrypt_io
-        )
+        slice256k_md5, content_md5, content_crc32, _ = rapid_upload_params(encrypt_io)
         ok = _rapid_upload(
             api,
             localpath,
             remotepath,
             slice256k_md5,
             content_md5,
             content_crc32,
-            io_len,
+            encrypt_io_len,
             local_ctime,
             local_mtime,
             ondup,
@@ -774,7 +768,7 @@ def callback_for_slice(monitor: MultipartEncoderMonitor):
                 slice256k_md5,
                 content_md5,
                 content_crc32,
-                io_len,
+                encrypt_io_len,
                 encrypt_password=encrypt_password,
                 encrypt_type=encrypt_type.value,
                 user_id=user_id,