remove '_' in basename: 1_.2.3 -> 1.2.3

rename

import os
import shutil
import click


@click.group()
def cli():
    pass

def isfmt(f):
    parts = f.split('.')
    if len(parts) != 3:
        return False
    return parts[0].endswith('_')

def refmt (f):
    parts = f.split('.')
    return '.'.join([parts[0][:-1],]+ parts[1:])

@cli.command()
@click.argument("srcdir", type=click.Path())
def rdname(srcdir):
    if os.path.isabs(srcdir) is False:
        srcdir = os.path.join(os.path.abspath('.'), srcdir)
    print srcdir
    fnames = filter(isfmt, os.listdir(srcdir))
    nnames =  map(refmt, fnames)
    for f, n in zip(fnames, nnames):
        print '{} --> {}'.format(f,n)
        shutil.move(os.path.join(srcdir, f), os.path.join(srcdir, n))

if __name__ == '__main__':
    cli()