Feb-26-2018, 12:22 PM
To get get whole file in form of POST you use Uploading Files method.
So need a form tag in html
Here a way that get whole .csv file but can also iterate over from server.
Sample data.
So need a form tag in html
enctype=multipart/form-data.Here a way that get whole .csv file but can also iterate over from server.
Sample data.
Output:5.1,3.5,1.4,0.2,Iris-setosa
4.9,3.0,1.4,0.2,Iris-setosa
4.7,3.2,1.3,0.2,Iris-setosa
4.6,3.1,1.5,0.2,Iris-setosaimport io
import csv
app = Flask(__name__)
def transform(text_file_contents):
return text_file_contents.replace("=", ",")
@app.route('/')
def form():
return """
<html>
<body>
<h1>Transform a file demo</h1>
<form action="/transform" method="post" enctype="multipart/form-data">
<input type="file" name="data_file" />
<input type="submit" />
</form>
</body>
</html>
"""
@app.route('/transform', methods=["POST"])
def transform_view():
f = request.files['data_file']
if not f:
return "No file"
stream = io.StringIO(f.stream.read().decode("UTF8"), newline=None)
csv_input = csv.reader(stream)
for row in csv_input:
print(row)
stream.seek(0)
result = transform(stream.read())
response = make_response(result)
response.headers["Content-Disposition"] = "attachment; filename=result.csv"
return response
if __name__ == "__main__":
app.run(debug=True)So get the whole file in and here is print on server.Output:E:\1py_div\div_code\flask
λ python app.py
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 184-514-049
['5.1', '3.5', '1.4', '0.2', 'Iris-setosa']
['4.9', '3.0', '1.4', '0.2', 'Iris-setosa']
['4.7', '3.2', '1.3', '0.2', 'Iris-setosa']
['4.6', '3.1', '1.5', '0.2', 'Iris-setosa']
127.0.0.1 - - [26/Feb/2018 13:20:50] "POST /transform HTTP/1.1" 200 -
