ENH: start latex

Author: TomAugspurger

pandas/formats/style.py

@@ -815,6 +815,20 @@ def _highlight_extrema(data, color='yellow', max_=True):
                                 index=data.index, columns=data.columns)
 
 
+class LatexStyler(BaseStyler):
+
+    environment = Environment(
+        block_start_string="((*",
+        block_end_string="*))",
+        variable_start_string="(((",
+        variable_end_string=")))",
+        comment_start_string="((=",
+        comment_end_string="=))",
+        loader=PackageLoader('pandas', 'formats/templates')
+    )
+    template = environment.get_template('latex.j2')
+
+
 def _maybe_wrap_formatter(formatter):
     if com.is_string_like(formatter):
         return lambda x: formatter.format(x)

pandas/formats/templates/latex.j2

@@ -0,0 +1,22 @@
+((* block header *))
+
+\begin{tabular}
+((* for r in head *))
+
+((* endfor *))
+
+\hline
+
+((* for row in body *))
+  ((* for cell in row *))
+    ((* if loop.last *))
+    ((( cell ))) \\
+    ((* else *))
+    ((( cell ))) &
+    ((* endif *))
+  ((* endfor *))
+((* endfor *))
+\end{tabular}
+
+((* endblock header *))
+

pandas/tests/formats/test_style.py

@@ -555,3 +555,11 @@ def test_background_gradient(self):
         result = (df.style.background_gradient(subset=pd.IndexSlice[1, 'A'])
                     ._compute().ctx)
         self.assertEqual(result[(1, 0)], ['background-color: #fff7fb'])
+
+class TestLatexStyler(TestCase):
+
+    def test_smoke(self):
+        df = pd.DataFrame(np.arange(12).reshape(4, 3))
+        from pandas.formats.style import LatexStyler
+        style = LatexStyler(df)
+        style.template.render()