bash - Concatenate all files except one calling system

to concatenate txt files of folder, can done cat easily:

cat ./tmp*.txt >./tmp/all.txt

however, want concatenate files except 1 can done following command explained here:

cat ./tmp/!(1.txt) >./tmp/all_except_1.txt

these commands work on command line, trying call them python os.system command , gives error

>>> import os >>> os.system('cat ./tmp/!(1.txt) >./tmp/all_except_1.txt') sh: 1: syntax error: "(" unexpected

does know why , how can solved?

you need enable extended pattern matching in bash before call it:

os.system("bash -o extglob -c 'cat ./tmp/!(1.txt) >./tmp/all_except_1.txt'")

YU