Invalid error in python program

[Prafull Ks]

I miss studying in class 11 cbse.College as introduced us python. I
installed it in my laptop but when I save and runed in idle mod. The 3.7.0
the 7 is highlighted and syntax error is showen. As showen in the screen
shot below.
Plz help me resolve this problem
Ur faithful user Prafull.
Thank you
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