Im trying to replace the first line of a file which has double quotes.
The File contains something like this:
"A"|"B"|"C"
"1"|"2"|"3"
I want to create or update the file to show something as follows (first line without double quotes):
A|B|C
"1"|"2"|"3"
Typically this can be done using bash with sed:
sed 's/"A"|"B"|"C"/A|B|C/g' inputfile.txt> outputfile.txt
I want to implement it from python using subprocess.call()
My code:
subprocess.call(["sed", 's/"A"|"B"|"C"/A|B|C/g', "inputfile.txt", ">", "outputfile.txt"])
But it throws an error:
sed: can't read >: No such file or directory
sed: can't read outputfile.txt: No such file or directory
I guess I have to create the file outputfile.txt first, but i want to do it all from python.
Can you help me please, thanks in advance.
>Solution :
To use > redirection you need to use shell=True and a single string argument, not a list.
subprocess.call("""sed 's/"A"|"B"|"C"/A|B|C/g' inputfile.txt > outputfile.txt""", shell=True)