无法在Git Bash中执行来自自定义Shell函数的Python代码。

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英文:

Unable to Execute Python Code from Custom Shell Function in Git Bash

问题

我正在尝试在Git Bash中创建一个自定义的shell函数,该函数允许我在输入特定命令时执行特定的Python代码片段,比如"Tree"。然而,我遇到了一个问题,代码未按预期执行,我收到以下错误消息:

$ Tree
$ bash: command not found

以下是详细信息:

我在我的Git Bash配置文件~/.bash_profile中创建了一个自定义的shell函数,如下所示:

tree() {
    python -c '
from directory_tree import display_tree
display_tree()
'
}

display_tree()函数在一个单独的Python文件directory_tree.py中定义,该文件位于Python解释器可以访问的目录中。该函数负责显示目录树结构。

期望的行为是,当我在Git Bash中的任何目录中键入"Tree"时,它应该执行Python代码并显示目录树结构。然而,当我尝试运行该命令时,我收到了$ Tree: bash: command not found错误。

我已经确保directory_tree.py文件位于正确的目录中,并且Python解释器可以成功导入display_tree函数。

在我的shell函数定义或执行Python代码的方式上,我是否漏掉了什么?我应该如何排除并解决这个问题?

非常感谢您的任何帮助或指导。谢谢!

英文:

I am trying to create a custom shell function in Git Bash that allows me to execute a specific Python code snippet when typing a certain command, such as "Tree". However, I'm encountering an issue where the code is not executing as expected and I receive the following error message:

$ Tree
$ bash: command not found

Here are the details:

I have created a custom shell function in my Git Bash configuration file ~/.bash_profile as follows:

tree() {
    python -c '
from directory_tree import display_tree
display_tree()
'
}

he display_tree() function is defined in a separate Python file called directory_tree.py, which is located in a directory accessible by the Python interpreter. The function is responsible for displaying the directory tree structure.

The expected behavior is that when I type Tree in any directory within Git Bash, it should execute the Python code and display the directory tree structure. However, when I try to run the command, I receive the $ Tree: bash: command not found error.

I have already ensured that the directory_tree.py file is located in the correct directory and that the Python interpreter can import the display_tree function successfully.

Am I missing something in my shell function definition or in the way I'm executing the Python code? How can I troubleshoot and resolve this issue?

Any help or guidance would be greatly appreciated. Thank you!

答案1

得分: 2

根据您提供的错误消息和您的用例,似乎问题更可能与Bash如何识别您的自定义函数有关,而不是与Python代码或其执行有关的问题。

以下是一些故障排除要点:

  • 大小写敏感性:Bash命令和函数是大小写敏感的。您已将函数定义为tree(小写),但您正在调用Tree(大写)。它们被视为不同的命令。如果您想使用大写Tree来调用它,应将函数定义更改为Tree(),而不是tree()。

  • 源自您的.bash_profile:在编辑.bash_profile(或任何shell配置文件)后,您需要对其进行源化,以使更改在当前shell中生效。您可以通过在终端中运行source ~/.bash_profile来执行此操作。

  • Python的路径:根据您的环境,可能需要提供Python解释器的完整路径。而不仅仅是python,使用/full/path/to/python。

  • directory_tree.py的路径:尽管您提到directory_tree.py文件位于Python解释器可访问的目录中,但在函数中指定Python文件的绝对路径将会更有帮助。

考虑以上要点,以下是您可以如何更改函数定义的方式:

Tree() {
    /full/path/to/python -c '
    import sys
    sys.path.insert(0, "/path/to/directory/where/directory_tree.py/is")
    from directory_tree import display_tree
    display_tree()
    '
}

不要忘记将/full/path/to/python替换为实际的Python解释器的完整路径,并将/path/to/directory/where/directory_tree.py/is替换为包含directory_tree.py文件的目录的完整路径。

在修改.bash_profile后,记得再次使用source ~/.bash_profile对其进行源化。

然后尝试使用Tree再次调用您的函数。

希望这有所帮助。

英文:

Based on the error message you provided and your use case, it seems like the problem is more likely related to how Bash is recognizing your custom function, rather than a problem with the Python code or its execution.

Here are a few points to troubleshoot:

  • Case Sensitivity: Bash commands and functions are case-sensitive. You have defined your function as tree (lowercase), but you are calling Tree (uppercase). These are considered different. If you want to call it with uppercase Tree, you should change the function definition to Tree() instead of tree().

  • Source your .bash_profile: After you edit your .bash_profile (or any shell configuration file), you need to source it in order for the changes to take effect in your current shell. You can do that by running source ~/.bash_profile in your terminal.

  • Path to Python: Depending on your environment, it might be necessary to provide the full path to the Python interpreter. Instead of just python, use /full/path/to/python.

  • Path to directory_tree.py: Even though you mentioned that the directory_tree.py file is in a directory accessible by the Python interpreter, it would be helpful to specify the absolute path to your Python file in your function.

Here's how you might change your function definition considering the above points:

   Tree() {
    /full/path/to/python -c '
import sys
sys.path.insert(0, "/path/to/directory/where/directory_tree.py/is")
from directory_tree import display_tree
display_tree()
'
}

Don't forget to replace /full/path/to/python with the actual full path to your Python interpreter, and /path/to/directory/where/directory_tree.py/is with the full path to the directory containing your directory_tree.py file.

After you modify your .bash_profile, remember to source it again with source ~/.bash_profile.

Then try calling your function again with Tree.

Hopefully, this helps.

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  • 本文由 发表于 2023年6月19日 10:20:19
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