Hi everybody,

I'm trying to convert an output of tetra alignment of jspecies to mega format, I got this script:

#!/usr/bin/env python2.7.6
import argparse

parser = argparse.ArgumentParser(description='Process the JSpecies output file to MEGA.')
parser.add_argument(dest='JSfile', metavar='', help='JSpecies file', type=str)
args = parser.parse_args()

M=[]

with open(args.JSfile, 'r') as JSinput:
    for line in JSinput:
        line = line.split()
        M.append(line)

analyseType = str(M[0][0])
title = '!Title '+analyseType+' results from '+args.JSfile+';'

if analyseType == 'ANIm':
    description = '!Description ANIm is the Average Nucleotide Identity using MUMmer algorithm calculated by the JSpecies software;'
elif analyseType == 'ANIb':
    description = '!Description ANIb is the Average Nucleotide Identity using BLAST algorithm calculated by the JSpecies software;'
elif analyseType == 'Tetra':
    description = '!Description Tetra is the Tetranucleotide Signature Frequency Correlation Coefficient calculated by the JSpecies software;'
else:
    description = ''

format = '!Format DataType=Distance DataFormat=LowerLeft NTaxa='+str(len(M[1]))+';'

print('#mega', title, description, format, sep='\n')
print()

for I in M[1]:
    print('#', i, sep='')
print()
for I in M[3:]:
    stop = i.index('---')
    for j in range(len(i[:stop-1])):
        if analyseType != 'Tetra':
            i[j+1] = i[j+1].replace('NaN','50')
            i[j+1] = '{0:f}'.format(100-float(i[j+1]))
        else:
            i[j+1] = i[j+1].replace('NaN','50')
            i[j+1] = '{0:f}'.format(1-float(i[j+1]))
    print(' '.join(i[1:stop]))

But when I try too use this I get:

File "./jspecies2mega.py", line 30
    print('mega', title, description, format, sep='\n')
                                                                          ^
SyntaxError: invalid syntax

It's the first time that I work on script without tutorial in Linux, if anyone can provide an answer why I get this syntax error that would be greatly appreciated.

Best,
Fety