Python进度条的制作代码实例

import sys,time#导入模块for i in range(50):#进度条的长度  sys.stdout.write("#")#进度条的内容，这里要注意了，pycharm有可能不显示write的方法  sys.stdout.flush()#刷新缓存  time.sleep(0.5)#间隔时间，和shell的sleep差不多吧

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)

# -*- coding: UTF-8 -*-import sys, timeclass ShowProcess():  """  显示处理进度的类  调用该类相关函数即可实现处理进度的显示  """  i = 0 # 当前的处理进度  max_steps = 0 # 总共需要处理的次数  max_arrow = 50 #进度条的长度  # 初始化函数，需要知道总共的处理次数  def __init__(self, max_steps):    self.max_steps = max_steps    self.i = 0  # 显示函数，根据当前的处理进度i显示进度  # 效果为[>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]100.00%  def show_process(self, i=None):    if i is not None:      self.i = i    else：      self.i += 1    num_arrow = int(self.i * self.max_arrow / self.max_steps) #计算显示多少个'>'    num_line = self.max_arrow - num_arrow #计算显示多少个'-'    percent = self.i * 100.0 / self.max_steps #计算完成进度，格式为xx.xx%    process_bar = '[' + '>' * num_arrow + '-' * num_line + ']'/           + '%.2f' % percent + '%' + '/r' #带输出的字符串，'/r'表示不换行回到最左边    sys.stdout.write(process_bar) #这两句打印字符到终端    sys.stdout.flush()  def close(self, words='done'):    print ''    print words    self.i = 0if __name__=='__main__':  max_steps = 100  process_bar = ShowProcess(max_steps)  for i in range(max_steps + 1):    process_bar.show_process()    time.sleep(0.05)  process_bar.close()

from Tkinter import *def resize(ev=one):  label.config(font='Helvetica -%d bold' % scale.get())top = Tk()top.geometry()label = Label(top, text = 'hello world!', font = 'Helvetica -12 bold')label.pack(fill=Y,expand=1)scale = Scale(top, from_=10, to=40, orient=HORIZONTAL, command=resize)scale.set(12)scale.pack(fill=X, expand=1)quit = Button(top, text="QUIT", command=top.quit, activeforeground='white', activebackground='red')quit.pack()mainloop()