問題描述
我想通過 FTP 將內(nèi)存中的各種數(shù)據(jù)(數(shù)組內(nèi)容、靜態(tài) html 代碼……)上傳到網(wǎng)絡(luò)服務(wù)器.
I want to upload various data from memory (contents of arrays, static html-code, ...) to a webserver via FTP.
這僅適用于一個(gè)基本字符串Hello World":
This works for just one basic string 'Hello World':
from ftplib import FTP
import io
...
bio = io.BytesIO(b'Hello World')
ftp.storbinary('STOR index.html', bio)
但是，我無法正確上傳以下數(shù)據(jù):
However, I do not get it right to upload data like:
datalog = array([['Temperature', 0, 0], ['Humidity', 0, 0]])
html_code = '<head><title></title></head><body>display here</body></html>
推薦答案
可以上傳文件，但不能上傳變量.
You can upload files but not variables.
您可以使用 BytesIO 或 StringIO 使用您的數(shù)據(jù)創(chuàng)建文件并上傳.它們具有像普通文件一樣的功能 - 即.bio.write(html_code.encode()).
You can use BytesIO or StringIO to create file with your data and upload it. They have functions like normal file - ie. bio.write(html_code.encode()).
from ftplib import FTP
import io
text = '<head><title></title></head><body>display here</body></html>'
bio = io.BytesIO()
bio.write(text.encode())
bio.seek(0) # move to beginning of file
ftp.storbinary('STOR index.html', bio)
對(duì)于 datalog，您可以使用模塊 json 來創(chuàng)建包含所有數(shù)據(jù)的字符串
For datalog you can use module json to create string with all data
from ftplib import FTP
import io
import json
datalog = ([['Temperature', 0, 0], ['Humidity', 0, 0]])
text = json.dumps(datalog)
bio = io.BytesIO()
bio.write(text.encode())
bio.seek(0) # move to beginning of file
ftp.storbinary('STOR data.json', bio)
帶有模塊 csv 的示例不能直接與 BytesIO 一起使用，但它需要字符串文件.
Example with module csv which can't work directly with BytesIO but it needs string file.
from ftplib import FTP
import io
import csv
data = [['Temperature', 0, 0], ['Humidity', 0, 0]]
bio = io.BytesIO()
iow = io.TextIOWrapper(bio) # create String wrapper
csv_writer = csv.writer(iow) # create csv writer
csv_writer.writerows(data) # write all rows
iow.flush() # force String to send all from buffer to file (you can't use `iow.close()` for it)
bio.seek(0) # move to beginning of file
ftp.storbinary('STOR data.csv', bio)
# to see what is in bio
#bio.seek(0)
#print(bio.read())
這篇關(guān)于如何在 Python 3 中通過 FTP 從內(nèi)存上傳數(shù)據(jù)?的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！