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# Python program to print Calendar without calendar or datetime module

Given the month and year. The task is to show the calendar of that month and in the given year without using any module or pre-defined functions.

Examples:

```Input :
mm(1-12) :9
yy :2010

Output :
September 2010
Su Mo Tu We Th Fr Sa
01 02 03 04
05 06 07 08 09 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30
```

Approach:

In the program below, we first calculate the number of odd days to find the day of the date 01-mm-yyyy.Then, we take in the year(yy) and the month(mm) as input and displays the calendar for that month of the year.

Below is the implementation of the given approach.

 `# Python code to print Calendar``# Without use of Calendar module``  ` `mm ``=` `2``yy ``=` `2020`` ` `month ``=``{``1``:``'January'``, ``2``:``'February'``, ``3``:``'March'``, ``        ``4``:``'April'``, ``5``:``'May'``, ``6``:``'June'``, ``7``:``'July'``,``        ``8``:``'August'``, ``9``:``'September'``, ``10``:``'October'``,``        ``11``:``'November'``, ``12``:``'December'``}``  ` `# code below for calculation of odd days``day ``=``(yy``-``1``)``%` `400``day ``=` `(day``/``/``100``)``*``5` `+` `((day ``%` `100``) ``-` `(day ``%` `100``)``/``/``4``) ``+` `((day ``%` `100``)``/``/``4``)``*``2``day ``=` `day ``%` `7`` ` `nly ``=``[``31``, ``28``, ``31``, ``30``, ``31``, ``30``, ``      ``31``, ``31``, ``30``, ``31``, ``30``, ``31``]``ly ``=``[``31``, ``29``, ``31``, ``30``, ``31``, ``30``, ``     ``31``, ``31``, ``30``, ``31``, ``30``, ``31``]``s ``=` `0`` ` `if` `yy ``%` `4` `=``=` `0``:``    ``for` `i ``in` `range``(mm``-``1``):``        ``s``+``=` `ly[i]``else``:``    ``for` `i ``in` `range``(mm``-``1``):``        ``s``+``=` `nly[i]`` ` `day ``+``=` `s ``%` `7``day ``=` `day ``%` `7``  ` `# variable used for white space filling ``# where date not present``space ``=``''``space ``=` `space.rjust(``2``, ``' '``)`` ` `# code below is to print the calendar``print``(month[mm], yy)``print``(``'Su'``, ``'Mo'``, ``'Tu'``, ``'We'``, ``'Th'``, ``'Fr'``, ``'Sa'``)`` ` `if` `mm ``=``=` `9` `or` `mm ``=``=` `4` `or` `mm ``=``=` `6` `or` `mm ``=``=` `11``: ``    ``for` `i ``in` `range``(``31` `+` `day):``         ` `        ``if` `i<``=` `day:``            ``print``(space, end ``=``' '``)``        ``else``:``            ``print``(``"{:02d}"``.``format``(i``-``day), end ``=``' '``)``            ``if` `(i ``+` `1``)``%` `7` `=``=` `0``:``                ``print``()``elif` `mm ``=``=` `2``:``    ``if` `yy ``%` `4` `=``=` `0``:``        ``p ``=` `30``    ``else``:``        ``p ``=` `29``         ` `    ``for` `i ``in` `range``(p ``+` `day):``        ``if` `i<``=` `day:``            ``print``(space, end ``=``' '``)``        ``else``:``            ``print``(``"{:02d}"``.``format``(i``-``day), end ``=``' '``)``            ``if` `(i ``+` `1``)``%` `7` `=``=` `0``:``                ``print``() ``else``:``    ``for` `i ``in` `range``(``32` `+` `day):``         ` `        ``if` `i<``=` `day:``            ``print``(space, end ``=``' '``)``        ``else``:``            ``print``(``"{:02d}"``.``format``(i``-``day), end ``=``' '``)``            ``if` `(i ``+` `1``)``%` `7` `=``=` `0``:``                ``print``()`

Output:

```February 2020
Su Mo Tu We Th Fr Sa
01
02 03 04 05 06 07 08
09 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
```

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