Timer class for profiling

Timer.py

class Timer:
    def __init__(self, indent = 30):
        self.start = time.time()
        self.rj = indent
        self.report = 'Start:'.rjust(self.rj) + '0.000000'.rjust(10)
        self.current = self.start
    def diff(self, msg):
        tmp = self.current
        self.current = time.time()
        return msg.rjust(self.rj) +':'+str(round(self.current - tmp, 6)).rjust(10)
    def total(self, msg):
        self.current = time.time()
        return msg.rjust(self.rj) +':'+str(round(self.current - self.start, 6)).rjust(10)
    def pdiff(self, msg):
        print(self.diff(msg))
    def ptotal(self, msg):
        print(self.total(msg))
    def build_report(self, msg):
        self.report += '\n' + self.diff(msg)
    def get_report(self):
        return self.report + '\n' + self.total("Total time taken")