How to resume file download in Python?

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If the web server supports the range request then you can add the Range header to your request:

Range: bytes=StartPos-StopPos

You will receive the part between StartPos and StopPos. If dont know the StopPos just use:

Range: bytes=StartPos-

So your code would be:

def resume_download(fileurl, resume_byte_pos):
    resume_header = {'Range': 'bytes=%d-' % resume_byte_pos}
    return requests.get(fileurl, headers=resume_header, stream=True,  verify=False, allow_redirects=True)

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