def add(): name = 'people' oldfile = open(name, 'r', encoding="utf-8") if oldfile: # 变量 oldfile 存在并且其值不为 None、False、0、空字符串或空列表/元组/字典 # 得到当前字符串中点所在的位置 num = name.rfind('.') if num > 0: # 确保文件名合法(‘.'的位置) flag = name[num:] newname = name[:num] + '副本' + flag # 字符串 newfile = open(newname, 'w', encoding="utf-8") for line in oldfile.readlines(): newfile.write(line) oldfile.close() newfile.close()
时间: 2024-02-14 07:06:40 浏览: 22
好的,您可以定义一个函数来显示所有变量的值。如下所示:
```python
def show_variables():
for name in globals().keys():
print(name, "=", str(globals()[name]))
```
然后在您的 `add()` 函数中,可以在适当的位置调用这个函数,如下所示:
```python
def add():
name = 'people'
oldfile = open(name, 'r', encoding="utf-8")
if oldfile:
num = name.rfind('.')
if num > 0:
flag = name[num:]
newname = name[:num] + '副本' + flag
newfile = open(newname, 'w', encoding="utf-8")
for line in oldfile.readlines():
newfile.write(line)
oldfile.close()
newfile.close()
show_variables() # 显示所有变量的值
```
这样,当您调用 `add()` 函数时,会在复制文件的过程结束后,输出所有变量的值。
相关问题
Usage: cp oldfile newfile
`cp` is a command-line utility used to copy files or directories. The `oldfile` represents the file or directory you want to copy, and `newfile` is the destination where you want to create a copy of the original file.
For example, if you have a file named "example.txt" in the current directory and you want to make a copy of it named "example_copy.txt", you would run the following command:
```
cp example.txt example_copy.txt
```
This will create a new file named "example_copy.txt" with the same content as the original "example.txt" file.
If you want to copy a directory and its contents, you can use the `-r` or `--recursive` option:
```
cp -r sourcedir destdir
```
Replace `sourcedir` with the name of the source directory and `destdir` with the destination directory where you want to create a copy.
Please note that if the destination file or directory already exists, the `cp` command will overwrite it unless you use specific options to prevent it.
解释workbook = load_workbook(oldfile) worksheet = workbook.worksheets[0]
这行代码的作用是从一个已有的 Excel 文件中读取数据。具体来说,它使用了 openpyxl 库中的 load_workbook() 函数,该函数接受一个文件路径作为参数,返回一个 Workbook 对象,表示该 Excel 文件。然后,我们通过 workbook.worksheets[0] 访问该 Workbook 对象的第一个 worksheet,即 Excel 文件中的第一个工作表。这个 worksheet 对象可以用于读取或修改工作表中的数据。