def format_month(year, month, day=-1):
"""Format a calendar for a given month, highlight the day if given"""
week_header = " Mo Tu We Th Fr Sa Su "
spaces = len(week_header) - len(months[month])
right = spaces / 2
left = spaces - right
month_str = " " * left + months[month] + " " * right
ret = [month_str, week_header]
line = " "
curr_day = jdn(year, month, 1) % 7
for i in range(curr_day):
line += " "
for i in range(day_months[month]):
if i + 1 == day:
line = line[:-1] + "[%2i]" % (i+1)
else:
line += "%2i " % (i+1)
curr_day += 1
if curr_day == 7:
ret.append(line)
line = " "
curr_day = 0
for i in range(curr_day, 7):
line += " "
ret.append(line)
return ret
def fridays():
month = 3
year = 2009
thirteenths = []
for i in range(120):
month += 1
if month > 12:
month -= 12
year += 1
if jdn(year, month, 13) % 7 == 4:
thirteenths.append((year, month))
return len(thirteenths)