[CodeStyle][UP030][UP031][UP032] using f-string

cmake/copyfile.py

@@ -26,18 +26,18 @@ def main():
         dst = os.path.join(dst, pathList[-1])
         if not os.path.exists(dst):
             shutil.copytree(src, dst)
-            print("first copy directory: {0} --->>> {1}".format(src, dst))
+            print(f"first copy directory: {src} --->>> {dst}")
         else:
             shutil.rmtree(dst)
             shutil.copytree(src, dst)
-            print("overwritten copy directory: {0} --->>> {1}".format(src, dst))
+            print(f"overwritten copy directory: {src} --->>> {dst}")
     else:  # copy file, wildcard
         if not os.path.exists(dst):
             os.makedirs(dst)
         srcFiles = glob.glob(src)
         for srcFile in srcFiles:
             shutil.copy(srcFile, dst)
-            print("copy file: {0} --->>> {1}".format(srcFile, dst))
+            print(f"copy file: {srcFile} --->>> {dst}")
 
 
 if __name__ == "__main__":

paddle/fluid/eager/auto_code_generator/generator/codegen_utils.py

@@ -579,7 +579,7 @@ def DetermineForwardPositionMap(
                 if len(forward_returns_list) == 1:
                     return_name = "out"
                 else:
-                    return_name = "out_{}".format(i + 1)
+                    return_name = f"out_{i + 1}"
             else:
                 return_name = forward_return[0]
             return_type = forward_return[1]

paddle/fluid/inference/tests/api/full_ILSVRC2012_val_preprocess.py

@@ -87,7 +87,7 @@ def download_concat(cache_folder, zip_path):
         download(data_urls[i], cache_folder, data_md5s[i])
         file_name = os.path.join(cache_folder, data_urls[i].split('/')[-1])
         file_names.append(file_name)
-        print("Downloaded part {0}\n".format(file_name))
+        print(f"Downloaded part {file_name}\n")
     with open(zip_path, "wb") as outfile:
         for fname in file_names:
             shutil.copyfileobj(open(fname, 'rb'), outfile)
@@ -174,13 +174,13 @@ def run_convert():
             retry = retry + 1
         else:
             raise RuntimeError(
-                "Can not convert the dataset to binary file with try limit {0}".format(
+                "Can not convert the dataset to binary file with try limit {}".format(
                     try_limit
                 )
             )
         download_concat(cache_folder, zip_path)
         convert_Imagenet_tar2bin(zip_path, output_file)
-    print("\nSuccess! The binary file can be found at {0}".format(output_file))
+    print(f"\nSuccess! The binary file can be found at {output_file}")
 
 
 def convert_Imagenet_local2bin(args):
@@ -231,7 +231,7 @@ def convert_Imagenet_local2bin(args):
         )
         if os.path.getsize(bin_file_path) == target_size:
             print(
-                "Success! The user data output binary file can be found at: {0}".format(
+                "Success! The user data output binary file can be found at: {}".format(
                     bin_file_path
                 )
             )

paddle/fluid/operators/generator/filters.py

@@ -57,7 +57,7 @@ class {to_pascal_case(op_name)}InferVarType
 
 
 def quote(s):
-    return '"{}"'.format(s)
+    return f'"{s}"'
 
 
 # ------------------------------ attr -------------------------------------
@@ -132,16 +132,16 @@ def filter_intermediate(items: Sequence):
 # -------------- transform argument names from yaml to opmaker ------------
 def to_opmaker_name(s):
     if s.endswith("_grad"):
-        return 'GradVarName("{}")'.format(s[:-5])
+        return f'GradVarName("{s[:-5]}")'
     else:
-        return '"{}"'.format(s)
+        return f'"{s}"'
 
 
 def to_opmaker_name_cstr(s):
     if s.endswith("_grad"):
-        return '"{}@GRAD"'.format(s[:-5])
+        return f'"{s[:-5]}@GRAD"'
     else:
-        return '"{}"'.format(s)
+        return f'"{s}"'
 
 
 def to_pascal_case(s):