import numpy as np import pandas import matplotlibpyplot as plt import glob import sys import re from tabulate import tabulate def last9chars(x) return(x9) files sorted(globglob('Datatxt'),key last9chars) filecount 0 n 0 txt Mean Std maxfilecount int(sysargv1) if len(sysargv) 1 else len(files) for f in files filecount 1 mydata nploadtxt(f, delimiter't') mean npmean(mydata,1) std npstd(mydata,1) print(fHere n) txtappend(f) Meanap