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我有一个快速的问题，听起来可能很愚蠢。但是为了我的爱，我无法在网上或自己找到解决方案！我正在尝试使用 python 为我自己制作一个 FTP 客户端，并且我正在尝试在 Tkinter 中制作一个列表框，以显示 FTP 服务器上的所有文件名。但我无法显示文本！这是我到目前为止的代码：

# Import the FTP object from ftplib
from ftplib import FTP
from Tkinter import *

app = Tk()
app.title("FTP")
app.geometry("300x500")

def handleDownload(block):
    file.write(block)
    print ".",

def login():
    ftp.login(username.get(),password.get())

    # This is where I am held up I tried ftp.retrlines('LIST') but it would
    # not be inserted into to the list box instead it inserted "Tranfer Complete" at the    end!
    # Any suggetion?
    h = ?
    stuff = Listbox(app)
    stuff.insert(END, h)
    stuff.pack()

    filename = "Steam Engine Poster.pdf"

    Label(app, text ='Opening local file ' + filename).pack()
    file = open(filename, 'wb')

    Label(app, text = "Downloading Steam Engine Poster.pdf").pack()

    ftp.retrbinary('RETR ' + filename, handleDownload)

    Label(app, text = "Closing FTP connection!").pack()

    ftp.close()



ftp = FTP('sciphigames.com')
Label(app, text = "Login").pack()

username = StringVar(None)
username = Entry(app, text = "Username: ")
username.pack()

password = StringVar(None)
password = Entry(app, text = "Password: ")
password.pack()

button = Button(app, text = "Login!", command = login)
button.pack()

app.mainloop()
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1 回答 1

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您会得到“Transfer Complete”，因为retrlines返回的是响应代码，而不是列表。如果您查看文档，您会看到除了命令之外，还有第二个参数，一个回调，它将为返回的每一行调用。默认情况下，它只是将行打印到标准输出。

lines = []
def append_line(line):
    lines.append(line)
ftp.retrlines('LIST', append_line)
于 2012-01-01T14:49:15.020 回答