import string
name= '*example -name_with^additional£$characters'
for j in name:
if j not in string.ascii_letters+string.digits+'_-':
name=name.replace(j,'')
print(name)
aW1wb3J0IHN0cmluZwpuYW1lPSAnKmV4YW1wbGUgLW5hbWVfd2l0aF5hZGRpdGlvbmFswqMkY2hhcmFjdGVycycKZm9yIGogaW4gbmFtZToKICAgIGlmIGogIG5vdCBpbiBzdHJpbmcuYXNjaWlfbGV0dGVycytzdHJpbmcuZGlnaXRzKydfLSc6CiAgICAgICAgbmFtZT1uYW1lLnJlcGxhY2UoaiwnJykKcHJpbnQobmFtZSk=