Added Calendar first implementation

it has some formatting problems

21_Calendar/python/calendar.py

@@ -0,0 +1,69 @@
+
+def calendar(weekday, leap_year):
+    """
+    function to print a year's calendar.
+
+    input: 
+        _weekday_: int - the initial day of the week (0=SUN, -1=MON, -2=TUES...)
+        _leap_year_: bool - indicates if the year is a leap year
+    """
+    months_days = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+    days = '     S       M       T       W       T       F       S'
+    sep = "*" * 59
+    years_day = 365
+    d = weekday
+
+    if leap_year:
+        months_days[2] = 29
+        years_day = 366
+
+    months_names = [" JANUARY ",
+                    " FEBRUARY",
+                    "  MARCH  ",
+                    "  APRIL  ",
+                    "   MAY   ",
+                    "   JUNE  ",
+                    "   JULY  ",
+                    "  AUGUST ",
+                    "SEPTEMBER",
+                    " OCTOBER ",
+                    " NOVEMBER",
+                    " DECEMBER"]
+
+    print(" "*32 + "CALENDAR")
+    print(" "*15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY")
+
+    days_count = 0  # S in the original program
+
+    # main loop
+    for n in range(1, 13):
+        days_count += months_days[n-1]
+        print("** {} ****************** {} ****************** {} **".format(days_count,
+                                                                            months_names[n-1], years_day-days_count))
+        print(days)
+        print(sep)
+        print("\n")
+
+        for w in range(1, 7):
+            print("\n")
+            for g in range(1, 8):
+                d += 1
+                d2 = d - days_count
+
+                if d2 > months_days[n]:
+                    break
+
+                if d2 > 0:
+                    print("{}".format(d2),end='       ')
+                else:
+                    print("{}".format(''),end='       ')
+            if d2 >= months_days[n]:
+                break
+
+        if d2 > months_days[n]:
+            d -= g
+
+        print("\n")
+
+if __name__ == "__main__":
+    calendar(-1, False)