Hello, I have a strange issue in my flask app, that currently prints this error in the logs:
2017-11-17 15:34:35,140: Error running WSGI application
2017-11-17 15:34:35,140: File "/home/Fragoel2/afp-mapping-site/flask_app.py", line 69
2017-11-17 15:34:35,141:
2017-11-17 15:34:35,141: global feature_list
2017-11-17 15:34:35,141:
2017-11-17 15:34:35,141: SyntaxError: name 'feature_list' is used prior to global declaration
2017-11-17 15:34:35,141: File "/var/www/fragoel2_pythonanywhere_com_wsgi.py", line 16, in <module>
2017-11-17 15:34:35,141: from flask_app import app as application
2017-11-17 15:34:35,141: ***************************************************
2017-11-17 15:34:35,141: If you're seeing an import error and don't know why,
2017-11-17 15:34:35,142: we have a dedicated help page to help you debug:
2017-11-17 15:34:35,142: https://help.pythonanywhere.com/pages/DebuggingImportError/
2017-11-17 15:34:35,142: ***************************************************
In my code first thing I do is init some global variables:
app = Flask(__name__)
feature_list = []
feature_count = 1
Then in my code I have:
First access to page
if request.method == 'GET':
reset_globals()
# Handle case in which we need to add a field to form
if request.method == 'POST' and request.form['submit'] == 'Add new row':
global feature_count, feature_list
feature_count += 1
feature_list.append(feature_count)
# Handle case in which we need to remove a field to form
if request.method == 'POST' and request.form['submit'].startswith('Delete row '):
removal_id = int(request.form['submit'][-1]) - 1
global feature_count, feature_list
feature_list.pop(removal_id)
MappingForm.delete_form_field_dinamically(removal_id)
# Utility function to reset global variables
def reset_globals():
global feature_list, feature_count
feature_count = 0
feature_list = [feature_count]
Weird thing is, my code runs fine locally on my machine but fails when hosted on Pythonanywhere... any clue why?
glenn
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PythonAnywhere staff
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