# Tk_regex_generator.py

# Tk_regex_generator.py -- ZZZ

sss = ''
punct = '''[A-Za-z0-9 {}~<=>,;:`_'!"#$%&@]+$'''
include = []
for z in '''\   [](){}-|?+*.$^''':
    sss = sss.replace(z,'')
    if z not in set(list(sss)):
        include.append(z)
sss = '\\'.join(include)
sss = sss.replace(' ','t')
regex = punct.format(sss)
print regex