def doi_uri_to_doi(value):
if value is None:<EOL><INDENT>return value<EOL><DEDENT>replace_values = ['<STR_LIT>', '<STR_LIT>',<EOL>'<STR_LIT>', '<STR_LIT>']<EOL>for replace_value in replace_values:<EOL><INDENT>value = value.replace(replace_value, '<STR_LIT>')<EOL><DEDENT>return value<EOL>
Strip the uri schema from the start of DOI URL strings