CODEWITHSUNDEEP
pythonflaskresponseflask-restfulsendfile
Shah Muhammad Talha Tahir
Shah Muhammad Talha Tahir

Reputation: 356

Python Flask : Returned file is not readable

While implementing a rest API in python flask, I have used several options to return a file (any type) , read it and save it to local repository of request but encountered with multiple errors as below:

Case 1:

def download_file(): return send_file('any_file.pdf') r = requests.get(url = 'http://localhost:5000/download').read()

has responded with a error Response object has no attribute read/text/content

Case 2:

def download_file(): file = open('any_file.pdf','r').read() return file r = requests.get(url = 'http://localhost:5000/download')

has responded with a error Return doesn't accept this

So How can I do this as flask is not allowing to return a file without response object and response object is not readable and doesn't support to save that file directly.

Upvotes: 0

Views: 492

Answers (1)

v25
v25

Reputation: 7621

The Flask server code in Case 1 is correct. A more complete example:

@app.route('/download')
def download_file():
    # Some logic here
    send_file('any_file.pdf')

However the Response object returned by requests.get doesn't have a read method. The correct way is to use:

Response.content: Content of the response, in bytes.

So, the client code should be:

r = requests.get('http://localhost:5000/download')
bytes = r.content

# Now do something with bytes, for example save it:

with open('downloaded_file.ext', 'wb') as f:
    f.write(bytes)

Upvotes: 2

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