【发布时间】:2014-02-24 20:13:57
【问题描述】:
我正在使用 Python 3.4 通过 FTP 上传一个大文件。
我希望能够在上传文件时显示进度百分比。这是我的代码:
from ftplib import FTP
import os.path
# Init
sizeWritten = 0
totalSize = os.path.getsize('test.zip')
print('Total file size : ' + str(round(totalSize / 1024 / 1024 ,1)) + ' Mb')
# Define a handle to print the percentage uploaded
def handle(block):
sizeWritten += 1024 # this line fail because sizeWritten is not initialized.
percentComplete = sizeWritten / totalSize
print(str(percentComplete) + " percent complete")
# Open FTP connection
ftp = FTP('website.com')
ftp.login('user','password')
# Open the file and upload it
file = open('test.zip', 'rb')
ftp.storbinary('STOR test.zip', file, 1024, handle)
# Close the connection and the file
ftp.quit()
file.close()
如何在句柄函数中获得已经读取的块数?
更新
在阅读了 cmd 的回答后,我将这个添加到我的代码中:
class FtpUploadTracker:
sizeWritten = 0
totalSize = 0
lastShownPercent = 0
def __init__(self, totalSize):
self.totalSize = totalSize
def handle(self, block):
self.sizeWritten += 1024
percentComplete = round((self.sizeWritten / self.totalSize) * 100)
if (self.lastShownPercent != percentComplete):
self.lastShownPercent = percentComplete
print(str(percentComplete) + " percent complete")
我这样调用 FTP 上传:
uploadTracker = FtpUploadTracker(int(totalSize))
ftp.storbinary('STOR test.zip', file, 1024, uploadTracker.handle)
【问题讨论】:
-
用 Python 创建进度条:thelivingpearl.com/2012/12/31/…
-
对于 Python 2,您需要将
percentComplete行更改为:percentComplete = round((float(self.sizeWritten) / float(self.totalSize)) * 100) -
有一个模块叫progressbar。我还没有检查它是否可以与 ftplib 一起使用,但无论如何它是一个非常完整的模块来呈现进度条
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嘿,谢谢,这正是我所需要的!一个问题:每次都会打印一个新行,一个新数字。我可以在同一个地方只更新一个号码吗? @cmd 没关系,我在这里找到了stackoverflow.com/questions/517127/…
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好的,现在我明白了。
session.storbinary('STOR '+upload_file, file, 1024, uploadTrack.handler)这里的处理程序有 2 个参数,实例名称和块大小,即 1024。然后我做了这样的:`def handler(self, chunk): self.size_written += len(chunk)
标签: python python-3.4