[英]Error running Python script from shell
I am trying to pipe output from a command written in the terminal to a Python script. 我正在尝试将终端中编写的命令的输出通过管道传递给Python脚本。
For example: 例如:
ls | ./foo.py
I wrote a Python script to do the same: 我写了一个Python脚本来做同样的事情:
#foo.py
import fileinput
with fileinput.input() as f_input :
for line in f_input :
print(line,end='')
But this does not seem to work, when I run the following command: 但这在我运行以下命令时似乎不起作用:
$ ls | sudo ./foo.py
I get an error that says: 我收到一条错误消息:
$ ./foo.py: command not found
I have checked the working directory and I can see the foo.py
when I use the ls
command, so what am I doing wrong here? 我已经检查了工作目录,使用
ls
命令时可以看到foo.py
,那么我在做什么错呢?
You have to pipe it to the Python executable, not to the name of a file. 您必须将其通过管道传递到Python可执行文件,而不是文件名。 As the error says, that filename doesn't represent a command it knows.
如错误所示,该文件名并不表示它知道的命令。
ls | py ./foo.py
Use py
or python
or however you run the Python interpreter on your particular system. 使用
py
或python
或者在特定系统上运行Python解释器。
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