Add Python 3 compatibility to dataviz

dataviz/full_source/dataviz.py

@@ -28,7 +28,7 @@ def parse(raw_file, delimiter):
     parsed_data = []
 
     # Skip over the first line of the file for the headers
-    fields = csv_data.next()
+    fields = next(csv_data)
 
     # Iterate over each row of the csv file, zip together field -> value
     for row in csv_data:

dataviz/tutorial_source/graph.py

@@ -31,7 +31,7 @@ def parse(raw_file, delimiter):
     parsed_data = []
 
     # Skip over the first line of the file for the headers
-    fields = csv_data.next()
+    fields = next(csv_data)
 
     # Iterate over each row of the csv file, zip together field -> value
     for row in csv_data:

dataviz/tutorial_source/parse.py

@@ -23,15 +23,15 @@ def parse(raw_file, delimiter):
 
     # Open CSV file, and safely close it when we're done
     opened_file = open(raw_file)
-    
+
     # Read the CSV data
     csv_data = csv.reader(opened_file, delimiter=delimiter)
 
     # Setup an empty list
     parsed_data = []
 
     # Skip over the first line of the file for the headers
-    fields = csv_data.next()
+    fields = next(csv_data)
 
     # Iterate over each row of the csv file, zip together field -> value
     for row in csv_data:
@@ -48,7 +48,7 @@ def main():
     new_data = parse(MY_FILE, ",")
 
     # Let's see what the data looks like!
-    print new_data
+    print(new_data)
 
 
 if __name__ == "__main__":

website/_containers/dataviz/2013-01-04-part-1.md

@@ -153,13 +153,13 @@ parsed_data = []
 Good — we have a good data structure to add to. Now let’s first address our column headers that came with the CSV file. They will be the first row, and we’ll assign them to the variable `fields`:
 
 ```python
-fields = csv_data.next()
+fields = next(csv_data)
 ```
 
 <div class="panel panel-default">
   <div class="panel-heading">For the Curious</div>
   <div class="panel-body">
-We were able to call the <code>.next</code> method on <code>csv_data</code> because it is a generator. We just call <code>.next</code> once, since headers are in the 1st and only row of our CSV file.
+We were able to use <code>next(csv_data)</code> because <code>csv_data</code> is a generator. We just call <code>next(csv_data)</code> once, since headers are in the 1st and only row of our CSV file.
 </div>
 </div>
 
@@ -189,7 +189,7 @@ def parse(raw_file, delimiter):
     parsed_data = []
 
     # Skip over the first line of the file for the headers
-    fields = csv_data.next()
+    fields = next(csv_data)
 
     # Iterate over each row of the csv file, zip together field -> value
     for row in csv_data:
@@ -211,7 +211,7 @@ def main():
     new_data = parse(MY_FILE, ",")
 
     # Let's see what the data looks like!
-    print new_data
+    print(new_data)
 ```
 
 We called our function `parse()` and gave it the `MY_FILE` global variable that we defined at the beginning, as well as the delimiter `","`.
@@ -266,7 +266,7 @@ The output from the `(DataVizProj) $ python parse.py` should look like a bunch o
 '18:59', 'Date': '02/18/2003', 'X': '-122.445006858202', 'Resolution': 'NONE'}]
 ```
 
-You see this output because in the `def main()` function, and you explicitly say `print new_data` which feeds to the output of the terminal. You could, for instance, not print the `new_data` variable, and just pass the `new_data` variable to another function. Coincidently, that’s what [Part II]( {{get_url("Part-2-Graph/")}}) and [Part III]( {{get_url("/Part-3-Map/")}}) are about!
+You see this output because in the `def main()` function, and you explicitly say `print(new_data)` which feeds to the output of the terminal. You could, for instance, not print the `new_data` variable, and just pass the `new_data` variable to another function. Coincidently, that’s what [Part II]( {{get_url("Part-2-Graph/")}}) and [Part III]( {{get_url("/Part-3-Map/")}}) are about!
 
 ### Explore further
 
@@ -332,7 +332,7 @@ Let’s play with the parser function a bit:
 >>> new_data[0].values()
 ['FRAUD', '030203898', 'Tuesday', 'FORGERY, CREDIT CARD', 'NORTHERN', '37.8014488257836', '2800 Block of VAN NESS AV', '16:30', '02/18/2003', '-122.424612993055', 'NONE']
 >>> for dict_item in new_data:
-...   print dict_item["Descript"]
+...   print(dict_item["Descript"])
 ...
 DRIVERS LICENSE, SUSPENDED OR REVOKED
 LOST PROPERTY
@@ -354,4 +354,3 @@ You can continue to play around; try `>>> help(parse.parse)` to see our docstrin
     <li class="next"><a href="{{ get_url('/dataviz/part-2/') }}">Part 2: Graphing <span aria-hidden="true">&rarr;</span></a></li>
   </ul>
 </nav>
-