I'm writing a Python script and I am having some trouble figuring out how to get the output of a command I send and store it in a variable, but for the entire output of that command - I only want to store the rest of 1 specific line after a certain word.
To illustrate - say I have a command that outputs hundreds of lines that all represent certain details of a specific product.
Color: Maroon Red
Height: 187cm
Number Of Seats: 6
Number Of Wheels: 4
Material: Aluminum
Brand: Toyota
#and hundreds of more lines...
I want to parse the entire output of the command that I sent which print the details above and only store the material of the product in a variable.
Right now I have something like:
child.sendline('some command that lists details')
variable = child.expect(["Material: .*"])
print(variable)
child.expect(prompt)
The sendline and expect prompt parts list the details correctly and all, but I'm having trouble figuring out how to parse the output of that command, look for a part that says "Material: " and only store the Aluminum string in a variable.
So instead of having variable equal to and print a value of 0 which is what currently prints right now, it should instead print the word "Aluminum".
Is there a way to do this using regex? I'm trying to get used to using regex expressions so I would prefer a solution using that but if not, I'd still appreciate any help! I'm also editing my code in vim and using linux if that helps.
You only need to look for the substring Material: . For this you can place the string you want to match (I am using a dot character, which means "match any character") in between a positive lookbehind for Material: and a positive lookahead for \r\n:
(?<=Material:\s).*(?=[\r\n])
You can find a good explanation for this regex here.