If the symbol is imported, it's imported for a reason. This is typically for readability or convenience. Programs are usually more clear if they read smoothly without a lot of extra words and punctuation sprinkled in.

However, if by being extra-verbose, your program gains clarity for those who are reading it, then go ahead. This can happen when more than one package might have a routine by similar names. If two packages have identical routine names, you might need to clarify the situation by specifying the package name.