fix style app/photo_routes/proutes.py

app/auth/auth.py

@@ -20,15 +20,25 @@ def two_factor_input():
         return redirect(url_for('proute.index'))
     form = GetTotp()
     if form.validate_on_submit():
-        if TOTP(contributor.totp_key).verify(int(form.totp_code.data), valid_window=5):
+        if TOTP(
+            contributor.totp_key,
+        ).verify(int(form.totp_code.data), valid_window=5):
             login_user(contributor, remember=session['remember_me'])
             flash("Congratulations, you are now logged in!")
             return redirect(url_for('proute.index'))
         else:
             flash("Oops, the pin was wrong")
             form.totp_code.data = None
-            return render_template('two_factor_input.html', form=form, inst="Code was wrong, try again?")
-    return render_template('two_factor_input.html', form=form, inst="Enter Auth Code")
+            return render_template(
+                'two_factor_input.html',
+                form=form,
+                inst="Code was wrong, try again?",
+            )
+    return render_template(
+        'two_factor_input.html',
+        form=form,
+        inst="Enter Auth Code",
+    )
 
 
 @auths.route("/login", methods=["GET", "POST"])
@@ -37,9 +47,14 @@ def login():
         return redirect(url_for('proute.index'))
     form = LoginForm()
     if form.validate_on_submit():
-        contributor_by_name = Contributor.query.filter_by(name=form.username.data).first()
-        contributor_by_email = Contributor.query.filter_by(email=form.email.data).first()
-        if contributor_by_name is not None and contributor_by_name.check_password(form.password.data):
+        contributor_by_name = Contributor.query.filter_by(
+            name=form.username.data,
+        ).first()
+        contributor_by_email = Contributor.query.filter_by(
+            email=form.email.data,
+        ).first()
+        cbn, cbe = contributor_by_name, contributor_by_email
+        if cbn is not None and cbn.check_password(form.password.data):
             if contributor_by_name.use_totp:
                 session['id'] = contributor_by_name.id
                 session['remember_me'] = form.remember_me.data
@@ -48,13 +63,16 @@ def login():
                 login_user(contributor_by_name, remember=form.remember_me.data)
                 flash("Congratulations, you are now logged in!")
                 return redirect(url_for('proute.index'))
-        elif contributor_by_email is not None and contributor_by_email.check_password(form.password.data):
+        elif cbe is not None and cbe.check_password(form.password.data):
             if contributor_by_email.use_totp:
                 session['id'] = contributor_by_email.id
                 session['remember_me'] = form.remember_me.data
                 return redirect(url_for('auths.two_factor_input'))
             else:
-                login_user(contributor_by_email, remember=form.remember_me.data)
+                login_user(
+                    contributor_by_email,
+                    remember=form.remember_me.data,
+                )
                 flash("Congratulations, you are now logged in!")
                 return redirect(url_for('proute.index'))
         else:

app/auth/email.py

@@ -8,13 +8,23 @@ from threading import Thread
 
 def send_password_reset_email(contributor, external_url):
     token = contributor.get_reset_password_token()
-    send_email('Photo App Reset Your Password',
-               sender=current_app.config['MAIL_ADMINS'][0],
-               recipients=[contributor.email],
-               text_body=render_template('email/reset_password_email_text.txt',
-                                         contributor=contributor, token=token, external_url=external_url),
-               html_body=render_template('email/reset_password_email_html.html',
-                                         contributor=contributor, token=token, external_url=external_url))
+    send_email(
+        'Photo App Reset Your Password',
+        sender=current_app.config['MAIL_ADMINS'][0],
+        recipients=[contributor.email],
+        text_body=render_template(
+            'email/reset_password_email_text.txt',
+            contributor=contributor,
+            token=token,
+            external_url=external_url,
+        ),
+        html_body=render_template(
+            'email/reset_password_email_html.html',
+            contributor=contributor,
+            token=token,
+            external_url=external_url,
+        ),
+    )
 
 
 def send_async_email(app, msg):
@@ -26,4 +36,7 @@ def send_email(subject, sender, recipients, text_body, html_body):
     msg = Message(subject, sender=sender, recipients=recipients)
     msg.body = text_body
     msg.html = html_body
-    Thread(target=send_async_email, args=(current_app._get_current_object(), msg)).start()
+    Thread(
+        target=send_async_email,
+        args=(current_app._get_current_object(), msg),
+    ).start()

app/auth/profile.py

@@ -26,7 +26,11 @@ def change_password():
         else:
             flash("Error Invalid Password")
             return(redirect(url_for('prof.change_password')))
-    return render_template('change_password.html', title='Change Password', form=form)
+    return render_template(
+        'change_password.html',
+        title='Change Password',
+        form=form,
+    )
 
 
 @prof.route("/edit-profile", methods=["GET", "POST"])

app/auth/register.py

@@ -17,9 +17,15 @@ def register():
         return redirect(url_for('proute.index'))
     form = RegistrationForm()
     if form.validate_on_submit():
-        db.engine.execute("SELECT setval('contributor_id_seq', (SELECT MAX(id) FROM contributor))")
+        my_sql = "SELECT setval('contributor_id_seq', "
+        my_sql += "(SELECT MAX(id) FROM contributor))"
+        db.engine.execute(my_sql)
         db.session.commit()
-        contributor = Contributor(name=form.username.data, num_photos=0, email=form.email.data)
+        contributor = Contributor(
+            name=form.username.data,
+            num_photos=0,
+            email=form.email.data,
+        )
         contributor.set_password(form.password.data)
         db.session.add(contributor)
         db.session.commit()

app/auth/reset_password.py

@@ -1,6 +1,8 @@
 #!/usr/bin/env python3
 
-from flask import Blueprint, redirect, url_for, flash, render_template, current_app
+from flask import (
+    Blueprint, redirect, url_for, flash, render_template, current_app
+)
 from flask_login import current_user
 from app.models import Contributor
 from app.forms import ResetPasswordForm, ResetPasswordRequestForm
@@ -25,7 +27,11 @@ def reset_password(token):
         db.session.commit()
         flash('Your password has been reset.')
         return redirect(url_for('auths.login'))
-    return render_template('reset_password.html', title="New Password?", form=form)
+    return render_template(
+        'reset_password.html',
+        title="New Password?",
+        form=form,
+    )
 
 
 @pwd.route('/reset-password-request', methods=['GET', 'POST'])
@@ -35,12 +41,23 @@ def reset_password_request():
     else:
         form = ResetPasswordRequestForm()
         if form.validate_on_submit():
-            contributor = Contributor.query.filter_by(email=form.email.data).first()
+            contributor = Contributor.query.filter_by(
+                email=form.email.data,
+            ).first()
             if contributor:
-                send_password_reset_email(contributor, current_app.config['EXTERNAL_URL'])
-                flash('Check your email for the instructions to reset your password')
+                send_password_reset_email(
+                    contributor,
+                    current_app.config['EXTERNAL_URL'],
+                )
+                my_flash = 'Check your email for the instructions '
+                my_flash += 'to reset your password'
+                flash(my_flash)
                 return redirect(url_for('auths.login'))
             else:
                 flash('Sorry, invalid email')
                 return redirect(url_for('auths.login'))
-        return render_template('reset_password_request.html', title='Reset Password', form=form)
+        return render_template(
+            'reset_password_request.html',
+            title='Reset Password',
+            form=form,
+        )

app/auth/totp.py

@@ -32,7 +32,12 @@ def enable_totp():
         else:
             flash("TOTP Code didn't validate, rescan and try again")
             return(redirect(url_for('prof.edit_profile')))
-    return render_template('qr.html', qr=qr, form=form, title="Aunthentication Code")
+    return render_template(
+        'qr.html',
+        qr=qr,
+        form=form,
+        title="Aunthentication Code",
+    )
 
 
 def get_totp_qr(contributor):
@@ -40,7 +45,9 @@ def get_totp_qr(contributor):
         contributor.totp_key = pyotp.random_base32()
         db.session.commit()
 
-    totp_uri = pyotp.totp.TOTP(contributor.totp_key).provisioning_uri(name=contributor.email, issuer_name='Photo App')
+    totp_uri = pyotp.totp.TOTP(
+        contributor.totp_key,
+    ).provisioning_uri(name=contributor.email, issuer_name='Photo App')
     img = qrcode.make(totp_uri, image_factory=qrcode.image.svg.SvgPathImage)
     f = BytesIO()
     img.save(f)

app/forms.py

@@ -2,7 +2,9 @@
 
 from flask_wtf import FlaskForm
 from wtforms import StringField, PasswordField, BooleanField, SubmitField
-from wtforms.validators import DataRequired, Email, Optional, Regexp, ValidationError, EqualTo, Length
+from wtforms.validators import (
+    DataRequired, Email, Optional, Regexp, ValidationError, EqualTo, Length
+)
 from flask_wtf.file import FileField, FileAllowed, FileRequired
 from app.models import Contributor, EmailWhiteList
 from zxcvbn import zxcvbn
@@ -13,17 +15,38 @@ class ConfirmPhotoDelete(FlaskForm):
 
 
 class GetTotp(FlaskForm):
-    totp_code = StringField('6-Digit Code?', validators=[DataRequired(), Length(min=6, max=6, message="6 Digits")], render_kw={'autofocus': True})
+    totp_code = StringField(
+        '6-Digit Code?',
+        validators=[DataRequired(), Length(min=6, max=6, message="6 Digits")],
+        render_kw={'autofocus': True},
+    )
     submit = SubmitField('OK')
 
 
 class ConfirmTotp(FlaskForm):
-    totp_code = StringField('6-Digit Code?', validators=[DataRequired(), Length(min=6, max=6, message="Rescan And Try Again")], render_kw={'autofocus': True})
+    totp_code = StringField(
+        '6-Digit Code?',
+        validators=[
+            DataRequired(),
+            Length(min=6, max=6, message="Rescan And Try Again"),
+        ],
+        render_kw={'autofocus': True},
+    )
     submit = SubmitField('Enable 2FA')
 
 
 class EditProfile(FlaskForm):
-    username = StringField('Username', validators=[DataRequired(), Regexp('^[a-zA-Z0-9]+$', message='letters and digits only (no spaces)')], render_kw={'autofocus': True})
+    username = StringField(
+        'Username',
+        validators=[
+            DataRequired(),
+            Regexp(
+                '^[a-zA-Z0-9]+$',
+                message='letters and digits only (no spaces)',
+            ),
+        ],
+        render_kw={'autofocus': True},
+    )
     email = StringField('Email', validators=[Optional(), Email()])
     password = PasswordField('Confirm Password', validators=[DataRequired()])
     submit = SubmitField('Update Name/Email')
@@ -44,7 +67,10 @@ class EditProfile(FlaskForm):
 
 
 class LoginForm(FlaskForm):
-    username = StringField('Username', validators=[Optional()], render_kw={'autofocus': True})
+    username = StringField(
+        'Username',
+        validators=[Optional()], render_kw={'autofocus': True},
+    )
     email = StringField('Email', validators=[Optional(), Email()])
     password = PasswordField('Password', validators=[DataRequired()])
     remember_me = BooleanField('Remember Me')
@@ -52,8 +78,15 @@ class LoginForm(FlaskForm):
 
 
 class ResetPasswordForm(FlaskForm):
-    password = PasswordField('Password', validators=[DataRequired(), Length(min=15, )], render_kw={'autofocus': True})
-    password2 = PasswordField('Repeat Password', validators=[DataRequired(), EqualTo('password')])
+    password = PasswordField(
+        'Password',
+        validators=[DataRequired(), Length(min=15, )],
+        render_kw={'autofocus': True},
+    )
+    password2 = PasswordField(
+        'Repeat Password',
+        validators=[DataRequired(), EqualTo('password')],
+    )
     submit = SubmitField('Request Password Reset')
 
     def validate_password(self, password):
@@ -62,10 +95,26 @@ class ResetPasswordForm(FlaskForm):
 
 
 class RegistrationForm(FlaskForm):
-    username = StringField('Username', validators=[DataRequired(), Regexp('^[a-zA-Z0-9]+$', message='letters and digits only (no spaces)')], render_kw={'autofocus': True})
+    username = StringField(
+        'Username',
+        validators=[
+            DataRequired(),
+            Regexp(
+                '^[a-zA-Z0-9]+$',
+                message='letters and digits only (no spaces)',
+            ),
+        ],
+        render_kw={'autofocus': True},
+    )
     email = StringField('Email', validators=[DataRequired(), Email()])
-    password = PasswordField('Password', validators=[DataRequired(), Length(min=15, )])
-    password2 = PasswordField('Repeat Password', validators=[DataRequired(), EqualTo('password')])
+    password = PasswordField(
+        'Password',
+        validators=[DataRequired(), Length(min=15, )],
+    )
+    password2 = PasswordField(
+        'Repeat Password',
+        validators=[DataRequired(), EqualTo('password')],
+    )
     submit = SubmitField('Register')
 
     def validate_password(self, password):
@@ -78,7 +127,9 @@ class RegistrationForm(FlaskForm):
             raise ValidationError('Please use a different username.')
 
     def validate_email(self, email):
-        white_listed_user = EmailWhiteList.query.filter_by(email=email.data).first()
+        white_listed_user = EmailWhiteList.query.filter_by(
+            email=email.data,
+        ).first()
         if white_listed_user is None:
             raise ValidationError('This email address is not authorized.')
         user = Contributor.query.filter_by(email=email.data).first()
@@ -87,14 +138,28 @@ class RegistrationForm(FlaskForm):
 
 
 class ResetPasswordRequestForm(FlaskForm):
-    email = StringField('Email', validators=[DataRequired(), Email()], render_kw={'autofocus': True})
+    email = StringField(
+        'Email',
+        validators=[DataRequired(), Email()],
+        render_kw={'autofocus': True},
+    )
     submit = SubmitField('Request Password Reset')
 
 
 class ChangePassword(FlaskForm):
-    password = PasswordField('Confirm Password', validators=[DataRequired()], render_kw={'autofocus': True})
-    new_password = PasswordField('New Password', validators=[DataRequired(), Length(min=15, )])
-    new_password2 = PasswordField('Repeat New Password', validators=[DataRequired(), EqualTo('new_password')])
+    password = PasswordField(
+        'Confirm Password',
+        validators=[DataRequired()],
+        render_kw={'autofocus': True},
+    )
+    new_password = PasswordField(
+        'New Password',
+        validators=[DataRequired(), Length(min=15, )],
+    )
+    new_password2 = PasswordField(
+        'Repeat New Password',
+        validators=[DataRequired(), EqualTo('new_password')],
+    )
     submit = SubmitField('Save')
 
     def validate_password(self, password):

app/models.py

@@ -64,12 +64,20 @@ class Contributor(UserMixin, db.Model):
         return '<Contributor {}>'.format(self.name)
 
     def get_reset_password_token(self, expires_in=1800):
-        return jwt.encode({'reset_password': self.id, 'exp': time() + expires_in}, current_app.config['SECRET_KEY'], algorithm='HS256').decode('utf-8')
+        return jwt.encode(
+            {'reset_password': self.id, 'exp': time() + expires_in},
+            current_app.config['SECRET_KEY'],
+            algorithm='HS256',
+        ).decode('utf-8')
 
     @staticmethod
     def verify_reset_password_token(token):
         try:
-            id = jwt.decode(token, current_app.config['SECRET_KEY'], algorithms=['HS256'])['reset_password']
+            id = jwt.decode(
+                token,
+                current_app.config['SECRET_KEY'],
+                algorithms=['HS256'],
+            )['reset_password']
         except BaseException as error:
             print('An exception occurred: {}'.format(error))
         return Contributor.query.get(id)

app/photo_routes/delete_download.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python3
 
-from flask import Blueprint, request, redirect, url_for, render_template, current_app, send_file
+from flask import (
+    Blueprint, request, redirect, url_for,
+    render_template, current_app, send_file,
+)
 from flask_login import current_user
 from app.models import Photo
 from app.forms import ConfirmPhotoDelete
@@ -17,7 +20,10 @@ def download():
     if current_user.is_authenticated:
         f = request.args['file']
         try:
-            return send_file('/var/lib/photo_app/photos/{}'.format(f), attachment_filename=f)
+            return send_file(
+                '/var/lib/photo_app/photos/{}'.format(f),
+                attachment_filename=f,
+            )
         except Exception as e:
             return str(e)
 
@@ -27,11 +33,14 @@ def delete():
     photo = Photo.query.get(request.args['photo_id'])
     if photo is None:
         return(redirect(url_for('proute.index')))
-    if not current_user.is_authenticated or photo.contributor_id != current_user.id:
+    cu = current_user
+    if not cu.is_authenticated or photo.contributor_id != cu.id:
         return(redirect(url_for('proute.index')))
     form = ConfirmPhotoDelete()
     if request.method == 'POST' and form.validate_on_submit():
-        return(redirect(url_for('p_route.photo', photo_id=delete_photo(photo))))
+        return(
+            redirect(url_for('p_route.photo', photo_id=delete_photo(photo))),
+        )
     return(render_template(
         'delete_photo.html',
         title="Delete Photo?",
@@ -49,11 +58,19 @@ def delete_photo(photo):
         password=current_app.config['DATABASE_PASSWORD']
     )
     cur = conn.cursor()
-    cur.execute("SELECT count(id) FROM photo WHERE contributor_id=%s AND id>%s", (photo.contributor_id, photo.id))
+    cur.execute(
+        "SELECT count(id) FROM photo WHERE contributor_id=%s AND id>%s",
+        (photo.contributor_id, photo.id),
+    )
     if cur.fetchone()[0] == 0:
-        cur.execute("SELECT id FROM photo WHERE contributor_id=%s ORDER BY id", (photo.contributor_id, ))
+        cur.execute(
+            "SELECT id FROM photo WHERE contributor_id=%s ORDER BY id",
+            (photo.contributor_id, ),
+        )
     else:
-        cur.execute("SELECT id FROM photo WHERE contributor_id=%s AND id>%s ORDER BY id", (photo.contributor_id, photo.id))
+        my_statement = "SELECT id FROM photo WHERE contributor_id=%s "
+        my_statement += "AND id>%s ORDER BY id"
+        cur.execute(my_statement, (photo.contributor_id, photo.id))
     next_photo_id = cur.fetchone()[0]
     os.chdir(current_app.config['PHOTO_SAVE_PATH'])
     if os.path.exists('raw_' + photo.photo_name):

app/photo_routes/photo_upload.py

@@ -2,7 +2,9 @@
 
 from flask import current_app
 from flask_login import current_user
-from flask import Blueprint, render_template, redirect, url_for, flash, request, abort
+from flask import (
+    Blueprint, render_template, redirect, url_for, flash, request, abort
+)
 from app.forms import UploadPhotoForm
 from .scripts.process_uploaded_photo import process_uploaded_photo
 from werkzeug.utils import secure_filename
@@ -23,10 +25,20 @@ def photo_upload():
         if filename != '':
             import os
             file_ext = os.path.splitext(filename)[1]
-            if file_ext not in ['.jpg', '.png'] or file_ext != validate_image(f.stream):
+            fe = file_ext
+            if fe not in ['.jpg', '.png'] or fe != validate_image(f.stream):
                 abort(400)
-            f.save(os.path.join(current_app.config['PHOTO_SAVE_PATH'], 'raw_' + filename))
-            photo_id = process_uploaded_photo(filename, current_user, current_app.config)
+            f.save(
+                os.path.join(
+                    current_app.config['PHOTO_SAVE_PATH'],
+                    'raw_' + filename,
+                ),
+            )
+            photo_id = process_uploaded_photo(
+                filename,
+                current_user,
+                current_app.config,
+            )
             print(photo_id)
             flash("Thanks for the new photo!")
             return(redirect(url_for('p_route.photo', photo_id=photo_id)))

app/photo_routes/photox.py

@@ -34,19 +34,35 @@ def find_next_previous(photo):
         password=current_app.config['DATABASE_PASSWORD']
     )
     cur = conn.cursor()
-    cur.execute("SELECT count(id) FROM photo WHERE contributor_id=%s AND id > %s", (photo.contributor_id, photo.id))
+    cur.execute(
+        "SELECT count(id) FROM photo WHERE contributor_id=%s AND id > %s",
+        (photo.contributor_id, photo.id),
+    )
     count = cur.fetchone()[0]
     if count == 0:
-        cur.execute("SELECT id FROM photo WHERE contributor_id=%s ORDER BY id", (photo.contributor_id, ))
+        cur.execute(
+            "SELECT id FROM photo WHERE contributor_id=%s ORDER BY id",
+            (photo.contributor_id, ),
+        )
     else:
-        cur.execute("SELECT id FROM photo WHERE contributor_id=%s AND id > %s ORDER BY id", (photo.contributor_id, photo.id))
+        my_sql = "SELECT id FROM photo WHERE contributor_id=%s "
+        my_sql += "AND id > %s ORDER BY id"
+        cur.execute(my_sql, (photo.contributor_id, photo.id))
     photo.next_photo_id = cur.fetchone()[0]
-    cur.execute("SELECT count(id) FROM photo WHERE contributor_id=%s AND id < %s", (photo.contributor_id, photo.id))
+    cur.execute(
+        "SELECT count(id) FROM photo WHERE contributor_id=%s AND id < %s",
+        (photo.contributor_id, photo.id),
+    )
     count = cur.fetchone()[0]
     if count == 0:
-        cur.execute("SELECT id FROM photo WHERE contributor_id=%s ORDER BY id DESC", (photo.contributor_id, ))
+        cur.execute(
+            "SELECT id FROM photo WHERE contributor_id=%s ORDER BY id DESC",
+            (photo.contributor_id, ),
+        )
     else:
-        cur.execute("SELECT id FROM photo WHERE contributor_id=%s AND id < %s ORDER BY id DESC", (photo.contributor_id, photo.id))
+        my_sql = "SELECT id FROM photo WHERE contributor_id=%s "
+        my_sql += "AND id < %s ORDER BY id DESC"
+        cur.execute(my_sql, (photo.contributor_id, photo.id))
     photo.previous_photo_id = cur.fetchone()[0]
     conn.close()
 
@@ -58,11 +74,17 @@ def calc_additional_data(photo):
     else:
         photo.SizeOnDisc = str(round(photo.photo_raw_size / 1024, 1)) + 'K'
     if photo.photo_1280_size >= 1048576:
-        photo.SizeOnDisc1280 = str(round(photo.photo_1280_size / 1048576, 1)) + 'M'
+        photo.SizeOnDisc1280 = str(
+            round(photo.photo_1280_size / 1048576, 1),
+        ) + 'M'
     else:
-        photo.SizeOnDisc1280 = str(round(photo.photo_1280_size / 1024, 1)) + 'K'
+        photo.SizeOnDisc1280 = str(
+            round(photo.photo_1280_size / 1024, 1),
+        ) + 'K'
     if photo.photo_480_size >= 1048576:
-        photo.SizeOnDisc480 = str(round(photo.photo_480_size / 1048576, 1)) + 'M'
+        photo.SizeOnDisc480 = str(
+            round(photo.photo_480_size / 1048576, 1),
+        ) + 'M'
     else:
         photo.SizeOnDisc480 = str(round(photo.photo_480_size / 1024, 1)) + 'K'
     if photo.GPSAltitude is not None:
@@ -71,6 +93,8 @@ def calc_additional_data(photo):
         photo.GPSAltitudeFeet = None
     if photo.GPSLatitude is not None and photo.GPSLongitude is not None:
         photo.LatLong = "{},{}".format(photo.GPSLatitude, photo.GPSLongitude)
-        photo.MapUrl = "https://www.google.com/maps/search/?api=1&query={}".format(photo.LatLong)
+        my_map_url = "https://www.google.com/"
+        my_map_url += "maps/search/?api=1&query={}".format(photo.LatLong)
+        photo.MapUrl = my_map_url
     else:
         photo.LatLong, photo.MapUrl = None, None

app/photo_routes/proutes.py

@@ -33,7 +33,9 @@ def get_photo_list(contributor_id):
         password=current_app.config['DATABASE_PASSWORD']
     )
     cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
-    cur.execute("SELECT photo_name,id FROM photo WHERE contributor_id=%s ORDER BY timestamp,\"DateTimeOriginal\" DESC", (contributor_id, ))
+    my_sql = "SELECT photo_name,id FROM photo WHERE contributor_id=%s "
+    my_sql += "ORDER BY timestamp,\"DateTimeOriginal\" DESC"
+    cur.execute(my_sql, (contributor_id, ))
     photos = cur.fetchall()
     conn.close()
     return photos

app/sendxmpp_handler.py

@@ -24,8 +24,10 @@ class SENDXMPPHandler(Handler):
         self.logging_xmpp_use_tls = logging_xmpp_use_tls
 
     '''
-    This works on Debian 10 with flask running under gunicorn3 as a systemd service, hack as necessary
-    echo '<message>' | /usr/bin/sendxmpp -t -u <sender> -j <server> -p <password> <recipient@example.com>
+    This works on Debian 10 with flask running under
+    gunicorn3 as a systemd service, hack as necessary
+    echo '<message>' | /usr/bin/sendxmpp -t -u <sender> \
+        -j <server> -p <password> <recipient@example.com>
     '''
     def emit(self, record):
         try: