Patches #626105:

Replaces the _center function in the calendar
module with the center method for strings.

For situations with uneven padding, the behavior is
slightly different in that the center method puts the
extra space on the right instead of the left.

Lib/calendar.py

@@ -122,13 +122,6 @@ def monthcalendar(year, month):
         rows.append(row)
     return rows
 
-def _center(str, width):
-    """Center a string in a field."""
-    n = width - len(str)
-    if n <= 0:
-        return str
-    return ' '*((n+1)/2) + str + ' '*((n)/2)
-
 def prweek(theweek, width):
     """Print a single week (no newline)."""
     print week(theweek, width),
@@ -141,7 +134,7 @@ def week(theweek, width):
             s = ''
         else:
             s = '%2i' % day             # right-align single-digit days
-        days.append(_center(s, width))
+        days.append(s.center(width))
     return ' '.join(days)
 
 def weekheader(width):
@@ -152,7 +145,7 @@ def weekheader(width):
         names = day_abbr
     days = []
     for i in range(_firstweekday, _firstweekday + 7):
-        days.append(_center(names[i%7][:width], width))
+        days.append(names[i%7][:width].center(width))
     return ' '.join(days)
 
 def prmonth(theyear, themonth, w=0, l=0):
@@ -163,7 +156,7 @@ def month(theyear, themonth, w=0, l=0):
     """Return a month's calendar string (multi-line)."""
     w = max(2, w)
     l = max(1, l)
-    s = (_center(month_name[themonth] + ' ' + `theyear`,
+    s = ((month_name[themonth] + ' ' + `theyear`).center(
                  7 * (w + 1) - 1).rstrip() +
          '\n' * l + weekheader(w).rstrip() + '\n' * l)
     for aweek in monthcalendar(theyear, themonth):
@@ -180,8 +173,8 @@ def format3c(a, b, c, colwidth=_colwidth, spacing=_spacing):
 
 def format3cstring(a, b, c, colwidth=_colwidth, spacing=_spacing):
     """Returns a string formatted from 3 strings, centered within 3 columns."""
-    return (_center(a, colwidth) + ' ' * spacing + _center(b, colwidth) +
-            ' ' * spacing + _center(c, colwidth))
+    return (a.center(colwidth) + ' ' * spacing + b.center(colwidth) +
+            ' ' * spacing + c.center(colwidth))
 
 def prcal(year, w=0, l=0, c=_spacing):
     """Print a year's calendar."""
@@ -193,7 +186,7 @@ def calendar(year, w=0, l=0, c=_spacing):
     l = max(1, l)
     c = max(2, c)
     colwidth = (w + 1) * 7 - 1
-    s = _center(`year`, colwidth * 3 + c * 2).rstrip() + '\n' * l
+    s = `year`.center(colwidth * 3 + c * 2).rstrip() + '\n' * l
     header = weekheader(w)
     header = format3cstring(header, header, header, colwidth, c).rstrip()
     for q in range(January, January+12, 3):