title: Error Reading CSV file using Python, Flask
body: <p>I'm very new to python and flask. I simply wanted to read a CSV file but it's giving me an error of "FileNotFoundError: [Errno 2] No such file or directory: 'Dog-Data.csv'" everytime I try to run run.py</p>
  
  <p>Here are my file order</p>
  
  <pre><code>DD\
      static\
          (bunch of image files)
      templates\
          (bunch of template files)
      __init__.py
      views.py
      Dog-Data.csv
  </code></pre>
  
  <p>views.py</p>
  
  <pre><code>from flask import render_template
  from app import app
  import csv
  
  @app.route('/')
  @app.route('/Home')
  def home():
      return render_template("Home.html",title='Home')
  
  @app.route('/MakeaMatch')
  def makeamatch():
      return render_template("MakeaMatch.html",title='Make a Match!')
  
  @app.route('/Game')
  def game():
      return render_template("Game.html",title='Game')
  
  @app.route('/ListofDogs')
  def listofdogs():
      return render_template("ListofDogs.html",title='List of Dogs')
  
  @app.route('/About')
  def about():
      return render_template("About.html", title='About')
  
  @app.route('/Contact')
  def contact():
      return render_template("Contact.html", title='Contact')
  
  @app.route('/MatchResult')
  def matchresult():
      class DogBreed:
          def __init__(self, br, per, si, lif, hou, cli):
              self.breed = br
              self.personality = per
              self.size = si
              self.lifestyle = lif
              self.housing = hou
              self.climate = cli
              self.match = 0
  
      #List that will contain class DogBreed
      ListOfBreeds = []
  
      data_file = open('Dog-Data.csv')
      csv_file = csv.reader(data_file)
  
      for row in csv_file:
          #print (row) #will print the csv file
          #print (row[2]) #will print element of that row
          dog_breed = DogBreed(row[0],row[1].lower().split(", "),row[2].lower(),row[3].lower(),row[4].lower(),row[5].lower())
          ListOfBreeds.append(dog_breed)
  
      data_file.close()
  
      #MORE CODES HERE. OMITTED BECAUSE I DON'T THINK IT'S RELEVANT
  
      return render_template("MatchResult.html",title='Match Result',posts=ListOfBreeds)
  </code></pre>
  
  <p>The webpage loads and templates shows up fine if I comment out the lines involving CSV. However, it doesn't of course show the result I want it too.</p>
  
  <p>I've also tried putting the Dog-Data.csv into the static folder and used</p>
  
  <pre><code>data_file = open('static/Dog-Data.csv')
  </code></pre>
  
  <p>but this didn't work either.</p>
  
  <p>Thanks so much for help.</p>