Better code formatting with ``python

There is more than that here. I had a bad commit of a bunch of temporary
files, I had to reset back in time, and now I am doing a massive commit.
Sorry.

pdf/clean_book

@@ -9,6 +9,8 @@ rm --f Kalman_and_Bayesian_Filters_in_Python.ipynb
 rm --f Kalman_and_Bayesian_Filters_in_Python.toc
 rm --f Kalman_and_Bayesian_Filters_in_Python.tex
 rm --f short.ipynb
+rm --f chapter.ipynb
+rm --f chapter.pdf
 
 rmdir  ./*_files/ 2> /dev/null
 

pdf/clean_book.bat

@@ -5,8 +5,12 @@ rm --f *.toc
 rm --f *.aux
 rm --f *.log
 rm --f *.out
-
 rm --f book.ipynb
 rm --f book.toc
 rm --f book.tex
+
+rm --f chapter.ipynb
+rm --f chapter.pdf
+
 rmdir  /S /Q book_files
+rmdir  /S /Q chapter_files

pdf/make_chapter.bat

@@ -0,0 +1,5 @@
+cp %1 chapter.ipynb
+ipython nbconvert --to latex chapter.ipynb
+ipython to_pdf.py chapter.tex
+
+

pdf/to_pdf.py

@@ -1,6 +1,12 @@
 import IPython.nbconvert.exporters.pdf as pdf
+import sys
 
-f = open('book.tex', 'r',  encoding="iso-8859-1")
+if len(sys.argv) == 2:
+    name = sys.argv[1]
+else:
+    name = 'book.tex'
+    
+f = open(name, 'r',  encoding="iso-8859-1")
 filedata = f.read()
 f.close()
 
@@ -11,5 +17,5 @@ f.write(newdata)
 f.close()
 
 p = pdf.PDFExporter()
-p.run_latex('book.tex')
+p.run_latex(name)