schemadiff.py 文件源码

def __init__(self,col_A,col_B):
        self.col_A = col_A
        self.col_B = col_B

        self.type_A = col_A.type
        self.type_B = col_B.type

        self.affinity_A = self.type_A._type_affinity
        self.affinity_B = self.type_B._type_affinity

        if self.affinity_A is not self.affinity_B:
            self.diff = True
            return

        if isinstance(self.type_A,Float) or isinstance(self.type_B,Float):
            if not (isinstance(self.type_A,Float) and isinstance(self.type_B,Float)):
                self.diff=True
                return

        for attr in ('precision','scale','length'):
            A = getattr(self.type_A,attr,None)
            B = getattr(self.type_B,attr,None)
            if not (A is None or B is None) and A!=B:
                self.diff=True
                return