def _parse_symbols(symbols):
if not symbols:
return tuple()
if isinstance(symbols, string_types):
return _symbols(symbols, seq=True)
elif isinstance(symbols, Expr):
return (symbols, )
elif is_sequence(symbols):
if all(isinstance(s, string_types) for s in symbols):
return _symbols(symbols)
elif all(isinstance(s, Expr) for s in symbols):
return symbols
raise ValueError("")
def _parse_symbols(symbols):
if not symbols:
return tuple()
if isinstance(symbols, string_types):
return _symbols(symbols, seq=True)
elif isinstance(symbols, Expr):
return (symbols,)
elif is_sequence(symbols):
if all(isinstance(s, string_types) for s in symbols):
return _symbols(symbols)
elif all(isinstance(s, Expr) for s in symbols):
return symbols
raise ValueError("")
def _parse_symbols(symbols):
if not symbols:
return tuple()
if isinstance(symbols, string_types):
return _symbols(symbols, seq=True)
elif isinstance(symbols, Expr or FreeGroupElement):
return (symbols, )
elif is_sequence(symbols):
if all(isinstance(s, string_types) for s in symbols):
return _symbols(symbols)
elif all(isinstance(s, Expr) for s in symbols):
return symbols
raise ValueError("The type of `symbols` must be one of the following: "
"a str, Symbol/Expr or a sequence of "
"one of these types")
def _parse_symbols(symbols):
if not symbols:
return tuple()
if isinstance(symbols, string_types):
return _symbols(symbols, seq=True)
elif isinstance(symbols, Expr or FreeGroupElement):
return (symbols,)
elif is_sequence(symbols):
if all(isinstance(s, string_types) for s in symbols):
return _symbols(symbols)
elif all(isinstance(s, Expr) for s in symbols):
return symbols
raise ValueError("The type of `symbols` must be one of the following: "
"a str, Symbol/Expr or a sequence of "
"one of these types")
def _parse_symbols(symbols):
if not symbols:
raise GeneratorsNeeded("generators weren't specified")
if isinstance(symbols, basestring):
return _symbols(symbols, seq=True)
elif isinstance(symbols, Expr):
return (symbols,)
elif is_sequence(symbols):
if all(isinstance(s, basestring) for s in symbols):
return _symbols(symbols)
elif all(isinstance(s, Expr) for s in symbols):
return symbols
raise GeneratorsError("expected a string, Symbol or expression or a non-empty sequence of strings, Symbols or expressions")