I wrote the following python code to neo4j using py2neo but i got the following error can anyone please help me.This is the first time i writing python code to connect to neo4j. Answer If you’re using Neo4j 2.2, authentication for database servers is enabled by default. You need to authenticate before p…
Tag: python
Match open and close brackets in garbled string
how would one go about parsing a random string (which contains all sorts of characters) into something coherent? For example, string = ‘{“letters” : ‘321″}{}”‘}{‘{}{{}”‘: “stack{}}{“}’ I’d like to make separate into: {“l…
How to parse json file with c-style comments?
I have a json file, such as the following: This file is auto created by another program. How do I parse it with Python? Answer I can not imagine a json file “auto created by other program” would contain comments inside. Because json spec defines no comment at all, and that is by design, so no json…
Calculating the averages for each KEY in a Pairwise (K,V) RDD in Spark with Python
I want to share this particular Apache Spark with Python solution because documentation for it is quite poor. I wanted to calculate the average value of K/V pairs (stored in a Pairwise RDD), by KEY. Here is what the sample data looks like: Now the following code sequence is a less than optimal way to do it, b…
How to do CamelCase split in python
What I was trying to achieve, was something like this: So I searched and found this perfect regular expression: As the next logical step I tried: Why does this not work, and how do I achieve the result from the linked question in python? Edit: Solution summary I tested all provided solutions with a few test c…
How to run a flask application?
I want to know the correct way to start a flask application. The docs show two different commands: and produce the same result and run the application correctly. What is the difference between the two and which should be used to run a Flask application? Answer The flask command is a CLI for interacting with F…
Setting up MongoDB + Django
I am new to Mongo DB and Django. I’ve been trying to use Mongo DB as my primary Database for Django. I’ve installed MongoDB and Django-nonrel as per the following link: Django – MongoDB setup The version of django-nonrel, i am using is 1.7. Clone link to it: pip install git+https://github.co…
Error message: “‘chromedriver’ executable needs to be available in the path”
I am using selenium with python and have downloaded the chromedriver for my windows computer from this site: http://chromedriver.storage.googleapis.com/index.html?path=2.15/ After downloading the zip file, I unpacked the zip file to my downloads folder. Then I put the path to the executable binary (C:Usersmic…
Tkinter: getting coordinates of a mouse drawn rectangle
Working on the answer of my previous question, I wonder how to get the coordinates of the 4 pixels representing the corners of the rectangle as well as its 2 dimensions ? Answer You can use canvas.bbox(item) to get the coordinates of the bounding box of an item on the canvas. Because your item is a rectangle,…
Error python : [ZeroDivisionError: division by zero]
I faced an error when I run my program using python: The error is like this: My program is similar to this: Thus, I want to ask, how to avoid that error in python. My desired output is z = 0 Answer Catch the error and handle it: Or check before you do the division: The latter can be reduced