trace.py 文件源码

def __init__(self, counts=None, calledfuncs=None, infile=None,
                 callers=None, outfile=None):
        self.counts = counts
        if self.counts is None:
            self.counts = {}
        self.counter = self.counts.copy() # map (filename, lineno) to count
        self.calledfuncs = calledfuncs
        if self.calledfuncs is None:
            self.calledfuncs = {}
        self.calledfuncs = self.calledfuncs.copy()
        self.callers = callers
        if self.callers is None:
            self.callers = {}
        self.callers = self.callers.copy()
        self.infile = infile
        self.outfile = outfile
        if self.infile:
            # Try to merge existing counts file.
            try:
                counts, calledfuncs, callers = \
                        pickle.load(open(self.infile, 'rb'))
                self.update(self.__class__(counts, calledfuncs, callers))
            except (IOError, EOFError, ValueError), err:
                print >> sys.stderr, ("Skipping counts file %r: %s"
                                      % (self.infile, err))