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application.py
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application.py
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from flask import Flask, jsonify, request, flash, redirect, url_for
from werkzeug.utils import secure_filename
from classifier import *
# app settings
UPLOAD_FOLDER = './uploads'
ALLOWED_EXTENSIONS = set(['csv'])
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
# not actually very secret... from online cause can't copy paste from terminal on laptop
app.config['SECRET_KEY'] = '\xfd{H\xe5<\x95\xf9\xe3\x96.5\xd1\x01O<!\xd5\xa2\xa0\x9fR"\xa1\xa8'
# load default classifier
clf = Classifier('name_gender.csv', 8)
#
## Routes
#
@app.route('/')
def root():
return '''
<!doctype html>
<p>go to 'predict/<name>' for a gender prediction result as JSON</p>
<p>go to 'update' to load new CSV</p>
'''
# from http://flask.pocoo.org/docs/1.0/patterns/fileuploads/ with changes
@app.route('/update', methods=['GET', 'POST'])
def upload_file():
res = {"updated": "false"}
if request.method == 'POST':
# check if the post request has the file part
if 'file' not in request.files:
flash('No file part')
return jsonify(res)
file = request.files['file']
# if user does not select file, browser also
# submit an empty part without filename
if file.filename == '':
flash('No selected file')
return jsonify(res)
if file and allowed_file(file.filename):
filename = secure_filename(file.filename)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
print(' * Updating classifier with new CSV')
clf = Classifier(os.path.join(app.config['UPLOAD_FOLDER'], filename))
res['updated'] = 'true'
res['trn_score'] = clf.trn_score
res['tst_score'] = clf.tst_score
return jsonify(res)
return '''
<!doctype html>
<title>Upload new File</title>
<h1>Upload new File</h1>
<form method=post enctype=multipart/form-data>
<input type=file name=file>
<input type=submit value=Upload>
</form>
<p>go to 'predict/<name>' for a gender prediction result as JSON</p>
'''
# from http://flask.pocoo.org/docs/1.0/patterns/fileuploads/
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
@app.route('/predict/<name>')
def predict_gender(name):
res = 'M' if clf.predict_name(name) == 0 else 'F'
#return f'{name} {res[0]}'
json = {'name': name, 'gender': res}
return jsonify(json)
if __name__ == '__main__':
if os.getenv('CLF_DOCKER', False):
app.run(host='0.0.0.0', port=80, debug=False)
else:
app.run(host='0.0.0.0', debug=False)