Python实现文件快速定位的十种方法

import os
 
file_path = "example.txt"
if os.path.exists(file_path):
    print("文件存在！")
else:
    print("文件不存在。")

import os
 
dir_path = "./my_directory"
files = os.listdir(dir_path)
print(files)

import glob
 
text_files = glob.glob("./my_directory/*.txt")
print(text_files)

from pathlib import Path
 
directory = Path("./my_directory")
for file in directory.glob('*.txt'):
    print(file)

import os
 
def find_files(suffix, path="."):
    for dirpath, dirs, files in os.walk(path):
        for name in files:
            if name.endswith(suffix):
                yield os.path.join(dirpath, name)
 
# 查找所有.txt文件
for file in find_files(".txt"):
    print(file)

import fnmatch
import os
 
for root, dirs, files in os.walk("./my_directory"):
    for name in files:
        if fnmatch.fnmatch(name, "*.txt"):
            print(os.path.join(root, name))

import shutil
import time
from pathlib import Path
 
source_dir = Path("./source")
backup_dir = Path("./backup")
timestamp = time.strftime("%Y%m%d%H%M%S")
 
# 创建备份目录（如果不存在）
backup_dir.mkdir(parents=True, exist_ok=True)
 
# 备份文件
for file in source_dir.glob('*.txt'):
    shutil.copy(file, backup_dir / f"{file.stem}_{timestamp}{file.suffix}")
 
print("备份完成！")

import os
 
dir_to_create = "./new_directory"
 
try:
    os.makedirs(dir_to_create, exist_ok=True)  # exist_ok=True防止已存在错误
    print(f"目录 '{dir_to_create}' 创建成功。")
except OSError as e:
    print(f"创建目录失败: {e}")

file_path = "./example.txt"
 
try:
    with open(file_path, 'r') as file:
        content = file.read()
    print(content)
except FileNotFoundError:
    print("文件未找到。")

import os
 
directory = "./my_directory"
extension = ".txt"
 
for filename in os.listdir(directory):
    if filename.endswith(extension):
        new_filename = filename[:-len(extension)] + "_renamed" + extension
        old_file_path = os.path.join(directory, filename)
        new_file_path = os.path.join(directory, new_filename)
        os.rename(old_file_path, new_file_path)
        print(f"文件已重命名: {filename} -> {new_filename}")