Remove tuple method parameters

They can be found through autopep8 (W690) or python-modernize.
Variables manually renamed.

This is because Python 3 does not support tuple unpacking:
http://legacy.python.org/dev/peps/pep-3113/

modules/bnporc/enterprise/pages.py

@@ -80,8 +80,9 @@ class BNPVirtKeyboard(MappedVirtKeyboard):
         MappedVirtKeyboard.__init__(self, imgdata, basepage.document, img, self.color)
         self.check_symbols(self.symbols, basepage.browser.responses_dirname)
 
-    def get_symbol_coords(self, (x1, y1, x2, y2)):
+    def get_symbol_coords(self, coords):
         # strip borders
+        x1, y1, x2, y2 = coords
         return MappedVirtKeyboard.get_symbol_coords(self, (x1+6, y1+1, x2-6, y2-4))
 
     def get_symbol_code(self, md5sum):
@@ -96,8 +97,9 @@ class BNPVirtKeyboard(MappedVirtKeyboard):
             code += self.get_symbol_code(self.symbols[c])
         return code
 
-    def checksum(self, (x1, y1, x2, y2)):
+    def checksum(self, coords):
         """Copy of parent checksum(), but cropping (removes empty lines)"""
+        x1, y1, x2, y2 = coords
         s = ''
         for y in range(y1, min(y2 + 1, self.height)):
             for x in range(x1, min(x2 + 1, self.width)):