BUG: df.to_html() should respect col_space argument. #1000

Author: y-p

pandas/core/format.py

@@ -434,6 +434,11 @@ def write(self, s, indent=0):
         self.elements.append(' ' * indent + com.pprint_thing(s))
 
     def write_th(self, s, indent=0, tags=None):
+        if (self.fmt.col_space is not None
+            and self.fmt.col_space > 0 ):
+            tags = (tags or "" )
+            tags += 'style="min-width: %s;"' % self.fmt.col_space
+
         return self._write_cell(s, kind='th', indent=indent, tags=tags)
 
     def write_td(self, s, indent=0, tags=None):