(x)
return " ".join(str(v) for v in x if not pd.isnull(v) and len(str(v)) > 0)
Concatenate values of series if value is not missing (nan or empty string
    for StringVariable)
Concatenate values of series if value is not missing (nan or empty string
    for StringVariable)
Concatenate values of series if value is not missing ( nan or empty string for StringVariable )
def concatenate(x):
    """
    Concatenate values of series if value is not missing (nan or empty string
    for StringVariable)
    """
    return " ".join(str(v) for v in x if not pd.isnull(v) and len(str(v)) > 0)
def concatenate ( x ) : return " " . join ( str ( v ) for v in x if not pd . isnull ( v ) and len ( str ( v ) ) > 0 )