The base python installation has a file code.py; this causes

problems when trying to import files from the code subdirectory.

I also tried to rearange some code so that book_format does not need
to be imported if you are not running in a Jupyter Notebook.

kf_book/538.json

@@ -0,0 +1,47 @@
+{
+  "lines.linewidth": 2.0,
+  "patch.linewidth": 0.5,
+  "legend.fancybox": true,
+  "axes.color_cycle": [
+    "#6d904f",
+    "#013afe", 
+    "#202020",
+    "#fc4f30",
+    "#e5ae38",
+    "#A60628",
+    "#30a2da",
+    "#008080",
+    "#7A68A6",
+    "#CF4457",
+    "#188487",
+    "#E24A33"
+  ],
+  "axes.facecolor": "#ffffff",
+  "axes.labelsize": "large",
+  "axes.axisbelow": true,
+  "axes.grid": true,
+  "patch.edgecolor": "#f0f0f0",
+  "axes.titlesize": "x-large",
+  "examples.directory": "",
+  "figure.facecolor": "#ffffff",
+  "grid.linestyle": "-",
+  "grid.linewidth": 2.0,
+  "grid.color": "#cbcbcb",
+  "axes.edgecolor":"#f0f0f0",
+  "xtick.major.size": 0,
+  "xtick.minor.size": 0,
+  "ytick.major.size": 0,
+  "ytick.minor.size": 0,
+  "axes.linewidth": 3.0,
+  "font.size":14.0,
+  "lines.linewidth": 3,
+  "lines.solid_capstyle": "butt",
+  "savefig.edgecolor": "#f0f0f0",
+  "savefig.facecolor": "#f0f0f0",
+  "figure.subplot.left"    : 0.08,
+  "figure.subplot.right"   : 0.95, 
+  "figure.subplot.bottom"  : 0.07,
+  "figure.subplot.hspace"  : 0.5,
+  "legend.scatterpoints" : 1
+}
+