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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def main():
 """ NAME incfish.py DESCRIPTION calculates fisher parameters from inc only data INPUT FORMAT takes inc data SYNTAX incfish.py [options] [< filename] OPTIONS -h prints help message and quits -i for interactive filename entry -f FILE, specify input file name -F FILE, specify output file name < filename for reading from standard input OUTPUT mean inc,Fisher inc, N, R, k, a95 NOTES takes the absolute value of inclinations (to take into account reversals), but returns gaussian mean if < 50.0, because of polarity ambiguity and lack of bias. """

    inc=[]
    if '-h' in sys.argv: # check if help is needed
        print(main.__doc__)
        sys.exit() # graceful quit
    if '-i' in sys.argv: # ask for filename
        file=input("Enter file name with inc data: ")
        inc=numpy.loadtxt(file)
    elif '-f' in sys.argv:
        ind=sys.argv.index('-f')
        file=sys.argv[ind+1]
        inc=numpy.loadtxt(file)
    else:
        inc = numpy.loadtxt(sys.stdin,dtype=numpy.float)
    ofile=""
    if '-F' in sys.argv:
        ind = sys.argv.index('-F')
        ofile= sys.argv[ind+1]
        out = open(ofile, 'w + a')
    #
    #get doincfish to do the dirty work:
    fpars= pmag.doincfish(inc)
    outstring='%7.1f %7.1f  %i %8.1f %7.1f %7.1f'%(fpars['ginc'],fpars['inc'],fpars['n'],fpars['r'],fpars['k'],fpars['alpha95'])
    if ofile == "":
        print(outstring)
    else:
        out.write(outstring+'\n')