Python显示进度条的方法(3)

时间:2014-09-22 12:01来源:网络整理作者:网络点击: 次

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另外，python cookbook中11.1节也提供了一个不错的进度条类，代码如下： import sysclass progressbar(object): def __init__(self, finalcount, block_char='.'): self.finalcount = final

另外，python cookbook中11.1节也提供了一个不错的进度条类，代码如下：

import sys
class progressbar(object):
  def __init__(self, finalcount, block_char='.'):
    self.finalcount = finalcount
    self.blockcount = 0
    self.block = block_char
    self.f = sys.stdout
    if not self.finalcount: return
    self.f.write('\n------------------ % Progress -------------------1\n')
    self.f.write('  1  2  3  4  5  6  7  8  9  0\n')
    self.f.write('----0----0----0----0----0----0----0----0----0----0\n')
  def progress(self, count):
    count = min(count, self.finalcount)
    if self.finalcount:
      percentcomplete = int(round(100.0*count/self.finalcount))
      if percentcomplete < 1: percentcomplete = 1
    else:
      percentcomplete=100
    blockcount = int(percentcomplete//2)
    if blockcount <= self.blockcount:
      return
    for i in range(self.blockcount, blockcount):
      self.f.write(self.block)
    self.f.flush()
    self.blockcount = blockcount
    if percentcomplete == 100:
      self.f.write("\n")

if __name__ == "__main__":
  from time import sleep
  pb = progressbar(8, "*")
  for count in range(1, 9):
    pb.progress(count)
    sleep(0.2)
  pb = progressbar(100)
  pb.progress(20)
  sleep(0.3)
  pb.progress(47)
  sleep(0.3)
  pb.progress(90)
  sleep(0.3)
  pb.progress(100)
  print "testing 1:"
  pb = progressbar(1)
  pb.progress(1)

运行结果如下图所示：