java應用swt顯示圖片示例分享

java應用swt顯示圖片示例分享。本站提示廣大學習愛好者：（java應用swt顯示圖片示例分享）文章只能為提供參考，不一定能成為您想要的結果。以下是java應用swt顯示圖片示例分享正文

年夜家在裝置法式或下載文件時，平日都能看到進度條，提醒你以後義務的進度。其實，在python中完成這個功效很簡略，上面是詳細代碼。在現實運用中，你完整可以依據本身的請求停止修正！好比，示例中是經由過程time.sleep()辦法停止時光延遲，你完整可以依據現實的法式運轉耗時停止掌握；異樣，在進度百分比處，你也能夠顯示現實的進度比，而不是例子中機械的自增百分比。

import sys
import time

def view_bar(num, total):
  rate = num / total
  rate_num = int(rate * 100)
  r = '\r[%s%s]%d%%' % ("="*num, " "*(100-num), rate_num, )
  sys.stdout.write(r)
  sys.stdout.flush()

if __name__ == '__main__':
  for i in range(0, 101):
    time.sleep(0.1)
    view_bar(i, 100)

再給年夜家分享一個辦法

import hashlib
 
a = "a test string"
print hashlib.md5(a).hexdigest()
print hashlib.sha1(a).hexdigest()
print hashlib.sha224(a).hexdigest()
print hashlib.sha256(a).hexdigest()
print hashlib.sha384(a).hexdigest()
print hashlib.sha512(a).hexdigest()

再來一個龐雜點的函數吧

#!/usr/bin/env python
#-*- coding:utf-8 -*-
import threading
import time
'''
class Demo:
  def __init__(self,thread_num=5):
    self.thread_num=thread_num
  def productor(self,i):
    print "thread-%d start" %i
  def start(self):
    threads=[]
    for x in xrange(self.thread_num):
      t=threading.Thread(target=self.productor,args=(x,))
      threads.append(t)
    for t in threads:
      t.start()
    for t in threads:
      t.join()
    print 'all thread end'
 
demo=Demo()
demo.start()
'''
thread_num=10
def productor(i):
    print "thread-%d start" %i
    time.sleep(2)
def start():
    threads=[]
    for x in range(thread_num):
      t=threading.Thread(target=productor,args=(x,))
      threads.append(t)
    for t in threads:
      t.start()
    for t in threads:
      t.join()
    print 'all thread end'

start()

#!/usr/bin/env python
#-*- coding:utf-8 -*-
import paramiko
import sys

private_key = paramiko.RSAKey.from_private_key_file('/root/.ssh/id_rsa')
# 創立SSH對象
ssh = paramiko.SSHClient()
# 許可銜接不在know_hosts文件中的主機
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
t = paramiko.Transport(('vm_135',22))
# 銜接辦事器
t.connect(username='root',pkey=private_key)
ssh.connect(hostname='vm_135', port=22, username='root',pkey=private_key)
# 履行敕令
sftp = paramiko.SFTPClient.from_transport(t)
stdin, stdout, stderr = ssh.exec_command('df')
# 獲得敕令成果
result = stdout.read()
print result

def progress_bar(transferred, toBeTransferred, suffix=''):
    # print "Transferred: {0}\tOut of: {1}".format(transferred, toBeTransferred)
    bar_len = 60
    filled_len = int(round(bar_len * transferred/float(toBeTransferred)))
    percents = round(100.0 * transferred/float(toBeTransferred), 1)
    bar = '=' * filled_len + '-' * (bar_len - filled_len)
    sys.stdout.write('[%s] %s%s ...%s\r' % (bar, percents, '%', suffix))
    sys.stdout.flush()
sftp.put("/tmp/134","/tmp/134",callback=progress_bar)

#for filename in filenames:
#  sftp.put(os.path.join(dirpath, filename),
#       os.path.join(remote_path, filename),
#       callback=self.progress_bar)
#  print
#  print "upload %s/%s" % (remote_path, filename) + '\t' + '[' + green("success") + ']'
ssh.close()

以上就是本文的全體內容了，年夜家能否對應用Python完成帶百分比進度條有了新的熟悉了呢，願望年夜家可以或許愛好。