Python進度條的制作代碼實例

import sys,time
#導入模塊
for i in range(50):
#進度條的長度
  sys.stdout.write("#")
#進度條的內容，這里要注意了，pycharm有可能不顯示write的方法
  sys.stdout.flush()
#刷新緩存
  time.sleep(0.5)
#間隔時間，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, time
class ShowProcess():
  """
  顯示處理進度的類
  調用該類相關函數即可實現處理進度的顯示
  """
  i = 0 # 當前的處理進度
  max_steps = 0 # 總共需要處理的次數
  max_arrow = 50 #進度條的長度

  # 初始化函數，需要知道總共的處理次數
  def __init__(self, max_steps):
    self.max_steps = max_steps
    self.i = 0

  # 顯示函數，根據當前的處理進度i顯示進度
  # 效果為[>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]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) #計算顯示多少個'>'
    num_line = self.max_arrow - num_arrow #計算顯示多少個'-'
    percent = self.i * 100.0 / self.max_steps #計算完成進度，格式為xx.xx%
    process_bar = '[' + '>' * num_arrow + '-' * num_line + ']'\
           + '%.2f' % percent + '%' + '\r' #帶輸出的字符串，'\r'表示不換行回到最左邊
    sys.stdout.write(process_bar) #這兩句打印字符到終端
    sys.stdout.flush()
  def close(self, words='done'):
    print ''
    print words
    self.i = 0
if __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()