added file downloader tutorial

Author: x4nth055

README.md

@@ -34,6 +34,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
 -[How to Make a Process Monitor in Python](https://www.thepythoncode.com/article/make-process-monitor-python). ([code](general/process-monitor))
 -[How to Make a Screen Recorder in Python](https://www.thepythoncode.com/article/make-screen-recorder-python). ([code](general/screen-recorder))
 -[How to Generate and Read QR Code in Python](https://www.thepythoncode.com/article/generate-read-qr-code-python). ([code](general/generating-reading-qrcode))
+-[How to Download Files in Python](https://www.thepythoncode.com/article/download-files-python). ([code](general/file-downloader))
 
 -### [Web Scraping](https://www.thepythoncode.com/topic/web-scraping)
 -[How to Access Wikipedia in Python](https://www.thepythoncode.com/article/access-wikipedia-python). ([code](general/wikipedia-extractor))

general/file-downloader/README.md

@@ -0,0 +1,11 @@
+# [How to Download Files in Python](https://www.thepythoncode.com/article/download-files-python)
+To download a file using Python:
+-`pip3 install -r requirements.txt`
+-
+```
+python download.py https://download.winzip.com/gl/nkln/winzip24-downwz.exe
+```
+This will start downloading the file and **outputs** something like this:
+```
+Downloading winzip24-downwz.exe: 6%|█████▏ | 779k/11.8M [00:03<00:55, 210kB/s]
+```

general/file-downloader/download.py

@@ -0,0 +1,25 @@
+fromtqdmimporttqdm
+importrequests
+importsys
+
+# the url of file you want to download, passed from command line arguments
+url=sys.argv[1]
+# read 1024 bytes every time 
+buffer_size=1024
+# download the body of response by chunk, not immediately
+response=requests.get(url, stream=True)
+
+# get the total file size
+file_size=int(response.headers.get("Content-Length", 0))
+
+# get the file name
+filename=url.split("/")[-1]
+
+# progress bar, changing the unit to bytes instead of iteration (default by tqdm)
+progress=tqdm(response.iter_content(buffer_size), f"Downloading {filename}", total=file_size, unit="B", unit_scale=True, unit_divisor=1024)
+withopen(filename, "wb") asf:
+fordatainprogress:
+# write data read to the file
+f.write(data)
+# update the progress bar manually
+progress.update(len(data))

general/file-downloader/requirements.txt

@@ -0,0 +1,2 @@
+tqdm
+requests