Makes this Python 2 and 3 compatible, small typo fix

Python 2 wasn't happy with list unpacking so that's removed
in favour of a simple iteration

example.ipynb

@@ -11,7 +11,7 @@
     " Code by default will be put into code cells\n",
     "\n",
     " * To make a markdown cell, prefix the comment line with with '#|' or '# |'\n",
-    " * To split a code cell, add a line beginning with '#-' or '# -#"
+    " * To split a code cell, add a line beginning with '#-' or '# -'"
    ]
   },
   {
@@ -100,25 +100,7 @@
    ]
   }
  ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.6.7"
-  }
- },
+ "metadata": {},
  "nbformat": 4,
  "nbformat_minor": 2
 }

py2nb

@@ -8,9 +8,9 @@ import os
 
 import nbformat.v4
 
-CODE_SPLIT_CHARS = ['#-', '# -']
+ACCEPTED_CHARS = ['#-', '# -']
 MARKDOWN_CHARS = ['#|', '# |']
-
+ACCEPTED_CHARS.extend(MARKDOWN_CHARS)
 
 def new_cell(nb, cell, markdown=False):
     """ Create a new cell
@@ -35,6 +35,11 @@ def new_cell(nb, cell, markdown=False):
         nb.cells.append(cell)
     return ''
 
+def str_starts_with(string, options):
+    for opt in options:
+        if string.startswith(opt):
+            return True
+
 
 def convert(script_name):
     """ Convert the python script to jupyter notebook"""
@@ -43,9 +48,9 @@ def convert(script_name):
         code_cell = ''
         nb = nbformat.v4.new_notebook()
         for line in f:
-            if line.startswith((*CODE_SPLIT_CHARS, *MARKDOWN_CHARS)):
+            if str_starts_with(line, ACCEPTED_CHARS):
                 code_cell = new_cell(nb, code_cell)
-                if line.startswith((*MARKDOWN_CHARS, )):
+                if str_starts_with(line, MARKDOWN_CHARS):
                     # find the first occurence of |
                     # and add the rest of the line to the markdown cell
                     markdown_cell += line[line.index('|') + 1:]