Mass copy selected files with Python

# Copy Pictures from server folder to local

import os
import shutil

import time
start_time = time.time()

test = True

count = 0
count_file = 0
count_duplicate_name = 0
file_copied = []

# commenting out the extensions I don't want to copy over, from the set obtained with an initial os.walk
valid_extensions = (
    # '', 
    # '.jso', 
    '.png', 
    '.mp4', 
    '.jpg_', 
    '.PNG', 
    '.mov', 
    # '.json', 
    # '.js', 
    # '.j', 
    '.bmp', 
    '.m4v', 
    # '.mp3', 
    '.jpeg', 
    # '.url', 
    '.AVI', 
    '.mpg', 
    '.m4a', 
    '.psd', 
    '.JPG', 
    # '.tmp', 
    # '.m', 
    '.jpg', 
    # '.ini', 
    # '.rss', 
    '.avi'
)

total_size = 0

for root, dirs, files in os.walk("/path/to/source/folder"):
    for name in files:
        if name.endswith(valid_extensions):
            count_file += 1
            file_size = os.path.getsize(f"{root}/{name}")
            file_size_mb = file_size / 1e+6
            total_size += file_size
            print(count_file, name, '\t', file_size, f" = {round(file_size_mb, 1)} Mb")

            if name in file_copied:
                count_duplicate_name += 1
            else:
                if not test:
                    shutil.copy2(f'{root}/{name}', '/path/to/destination/folder')
                file_copied.append(name)

##########

if __name__ == '__main__':
    print()
    print()
    print('-------------------------------')
    print(f"{os.path.basename(__file__)}")
    print()
    print(f"count_file = {count_file}")
    print(f"count_duplicate_name = {count_duplicate_name}")
    print(f"total_size = {total_size} bytes")
    print(f"total_size_mb = {int(total_size / 1e+6)} Mb")
    print(f"total_size_gb = {int(total_size / 1e+6 / 1024)} Gb")
    print()
    print(f"file_copied = {len(file_copied)}")
    print(f"count_duplicate_name = {count_duplicate_name}")
    print('-------------------------------')
    run_time = round((time.time() - start_time), 1)
    if run_time > 60:
        print(f'{os.path.basename(__file__)} finished in {round(run_time/60, 1)} minutes.')
    else:
        print(f'{os.path.basename(__file__)} finished in {round(run_time, 1 )}s.')
    print()