Update python version

tools/coverage.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 import sys
 import os
 import re
@@ -7,25 +7,24 @@
 if __name__ == '__main__':
     """Show .gcov file statistics."""
     multiline_section = True if '-m' in sys.argv else False
-    cols = ('Name', 'Lines', 'Miss', 'Cover', 'Missing')
-    ts = [15, 6, 6, 8, 10] # table spaces
-    t_header = '%%-%ds %%%ds %%%ds %%%ds  %%-%ds' % tuple(ts)
-    t_line = '-' * (sum(ts) + 4)
-    ts[3] -= 1
-    t_row = '%%-%ds %%%dd %%%dd %%%d.2f%%%%  %%-%ds' % tuple(ts)
+    header = '{:15} {:>6} {:>6} {:>8} {:>10}'.format('Name', 'Lines', 'Miss',
+                                                     'Cover', 'Missing')
+    print()
+    print(header)
+    t_line = '-' * len(header)
+    print(t_line)
+
     total_line_count = 0
     total_miss = 0
     total_cover = 0
-    print t_header % cols
-    print t_line
     for file in os.listdir('.'):
         if file.endswith('.gcov'):
-            lines = open(file).readlines();
+            lines = open(file).readlines()
             not_empty = 0
             miss = 0
             miss_sec = []
             for line in lines:
-                search = re.search('#####:\s*?(\d+)', line)
+                search = re.search(r'#####:\s*?(\d+)', line)
                 if search:
                     miss += 1
                     line_n = int(search.group(1))
@@ -38,21 +37,26 @@
             line_count = miss + not_empty
             file_coverage = (float(not_empty) / (line_count)) * 100
             file = file[:-5]
-            if len(file) > ts[0]:
-                file = file[:(ts[0] - 3)] + '...'
+            if len(file) > 15:
+                file = file[:(15 - 3)] + '...'
             n_sections = ''
-            for sec in miss_sec:
+            for a, b in miss_sec:
+                n_sections += f'{a}' if a == b else f'{a}-{b}'
                 if multiline_section:
-                    n_sections += ('%d\n' % sec[0]) if sec[0] == sec[1] else ('%d-%d\n' % tuple(sec))
-                    n_sections += (sum(ts) - 4) * ' '
+                    n_sections += f'\n{" ":{len(header) - 9}}'
                 else:
-                    n_sections += ('%d, ' % sec[0]) if sec[0] == sec[1] else ('%d-%d, ' % tuple(sec))
+                    n_sections += ', '
             if multiline_section:
                 n_sections = n_sections[:n_sections.rfind('\n')]
-            print t_row % (file, line_count, miss, file_coverage, n_sections[:-2])
+            else:
+                n_sections = n_sections[:-2]
+            print(f'{file:15s} {line_count:6d} {miss:6d}',
+                  f'{file_coverage:7.02f}%  {n_sections}')
             total_line_count += line_count
             total_miss += miss
             total_cover += file_coverage * line_count
-    print t_line
     total_cover /= total_line_count
-    print t_row % ('TOTAL', total_line_count, total_miss, total_cover, '')
+    print(t_line)
+    print(f'{"TOTAL":15} {total_line_count:6d} {total_miss:6d}',
+          f'{total_cover:7.2f}%')
+    print()