以下は、同じ構造を持つ2つのディレクトリを反復処理し、```*.csv```を含む名前のファイルに対してbashコマンドを実行するPythonコードの例です：
```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```
説明

```os.walk(dir1)```は```dir1```とそのサブディレクトリにあるすべてのファイルとディレクトリを繰り返し処理します。
```os.path.join(root, name)```は、```dir1```内のファイルのフルパスを構築する。
```os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))```は、```dir1 ```のファイルの相対パスを計算し、```dir2```と結合することによって、```dir2```のファイルの対応するパスを構築する。
```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```0は、ファイル名が.csvで終わっているかどうかをチェックする。
```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```1はファイル・パスを引数としてbashコマンド```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```2を実行します。
```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```3はサブシェルでコマンドを実行するので、```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```4では有効なbashコマンドなら何でも使えることに注意してください。
Here is an example Python code that iterates through two directories with the same structure and runs a bash command on files whose names contain ```*.csv```:
```python
import os

dir1 = '/path/to/dir1'
dir2 = '/path/to/dir2'
cmd1 = 'your bash command here {} {}'

for root, dirs, files in os.walk(dir1):
    for name in files:
        if name.endswith('.csv'):
            file_path_in_dir1 = os.path.join(root, name)
            file_path_in_dir2 = os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))
            os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))
```
Explanation:

```os.walk(dir1)``` iterates through all files and directories in ```dir1``` and its subdirectories.
```os.path.join(root, name)``` constructs the full path of the file in ```dir1```.
```os.path.join(dir2, os.path.relpath(file_path_in_dir1, dir1))``` constructs the corresponding path of the file in ```dir2``` by computing the relative path of the file in ```dir1 ``` and then joining it with ```dir2```.
```if name.endswith('.csv')``` checks if the file name ends with .csv.
```os.system(cmd1.format(file_path_in_dir1, file_path_in_dir2))``` runs the bash command ```cmd1``` with the file paths as arguments.
Note that ```os.system``` runs the command in a subshell, so you can use any valid bash command in ```cmd1```.