关于Python中文件操作的常见错误案例

原创秒速五厘米 2025-02-16 16:00 44阅读 0赞

在Python中进行文件操作时，可能会遇到以下几种常见的错误案例：

文件不存在：
```
file = open("non_existent_file.txt", "r")
```
错误：FileNotFoundError: [Errno 2] No such file or directory

没有关闭文件：

file = open("test_file.txt", "w+")
content = "Hello, World!"
file.write(content)
file.close()  # 忘记这一步

错误：AttributeError: ‘File’ object has no attribute ‘close’

文件路径问题（例如，相对路径和绝对路径）：
```python

相对路径
relative_path_file = “data/relative_file.txt”
file = open(relative_path_file, “r”)

绝对路径

absolute_path_file = “/home/user/data/absolute_file.txt”
try:
file = open(absolute_path_file, “r”))
except FileNotFoundError:
print(“File not found using absolute path.”)

错误：FileNotFoundError: [Errno 2] No such file or directory
4. 文件操作权限问题（如，文件被其他程序锁定）：
```python
file_lock_error_example = open("test_locked_file.txt", "w")
# 这里模拟一个文件被其他程序锁住的情况
time.sleep(5)  # 模拟等待锁的释放
try:
    file_lock_error_example.write("Content locked by another process.")
except IOError as e:
    print(f"Error occurred: {e}")