Merge branch 'python_mistakes' into 'master'

added another example in the notebook See merge request !3

Merge branch 'python_mistakes' into 'master'
added another example in the notebook See merge request !3
c6ab69f3 · Toby Hodges · 10280980 · 1941a563 · c6ab69f3
Commit c6ab69f3 authored 8 years ago by Toby Hodges
--- a/meetings/mistakes-01032017/Mistakes.ipynb
+++ b/meetings/mistakes-01032017/Mistakes.ipynb
@@ -83,15 +83,30 @@
   ]
  },
  {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
   "metadata": {
    "collapsed": true,
    "deletable": true,
    "editable": true
   },
-   "outputs": [],
-   "source": []
+   "source": [
+    "Whats wrong here... \n",
+    "```bash\n",
+    "\n",
+    "conda create -n giphy python=3\n",
+    "conda install Flask\n",
+    "  (..)\n",
+    "  Package plan for installation in environment /Users/scholtal/anaconda:\n",
+    "  (..)\n",
+    "  The following packages will be UPDATED:\n",
+    "  (..)\n",
+    "  The following packages will be DOWNGRADED due to dependency conflicts:\n",
+    "  (..)\n",
+    "\n",
+    "```\n",
+    "\n",
+    "Spot the missing ``source activate giphy``...."
+   ]
  }
 ],
 "metadata": {

 %% Cell type:code id: tags:

 ``` python
 # this can be a shortcut to assign None to multiple variables
 x = y = z = None
 z = 1

 print(x,y,z)
 ```

 %% Output

    (None, None, 1)

 %% Cell type:code id: tags:

 ``` python
 # BAD: this is probably not what you wanted
 u = i = o = []
 o.append("x")

 print(u,i,o)
 ```

 %% Output

    (['x'], ['x'], ['x'])

 %% Cell type:code id: tags:

 ``` python
 # BAD: the original list you pass to the method will get updated!
 def my_method(mutable_list=[]):
    mutable_list.append('x')
    return mutable_list

 # a list out of the my_method scope
 a_list = ['a']

 b_list = my_method(mutable_list=a_list)

 # a_list get modified!
 print( a_list == b_list, a_list, b_list )
 ```

 %% Output

    (True, ['a', 'x'], ['a', 'x'])

-%% Cell type:code id: tags:
+%% Cell type:markdown id: tags:
+
+Whats wrong here...
+```bash
+
+conda create -n giphy python=3
+conda install Flask
+  (..)
+  Package plan for installation in environment /Users/scholtal/anaconda:
+  (..)
+  The following packages will be UPDATED:
+  (..)
+  The following packages will be DOWNGRADED due to dependency conflicts:
+  (..)

-``` python
 ```
+
+Spot the missing ``source activate giphy``....