schema.py 文件源码

def __repr__(self):
        kwarg = []
        if self.key != self.name:
            kwarg.append('key')
        if self.primary_key:
            kwarg.append('primary_key')
        if not self.nullable:
            kwarg.append('nullable')
        if self.onupdate:
            kwarg.append('onupdate')
        if self.default:
            kwarg.append('default')
        if self.server_default:
            kwarg.append('server_default')
        return "Column(%s)" % ', '.join(
            [repr(self.name)] + [repr(self.type)] +
            [repr(x) for x in self.foreign_keys if x is not None] +
            [repr(x) for x in self.constraints] +
            [(self.table is not None and "table=<%s>" %
                    self.table.description or "table=None")] +
            ["%s=%s" % (k, repr(getattr(self, k))) for k in kwarg])