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ProcessBar.py
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#!/usr/local/lib
# -*- coding: UTF-8 -*-
import sys, time
class 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 = 0