Update README.md

DanielMSousa · web-flow · commit df48ae044479 · 2021-09-11T11:44:28.000-03:00
diff --git a/README.md b/README.md
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 # python calculator
 
 A simple calculator implemented with the built-in python module tkinter used to create interfaces.
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+The interface shows the last calculation made and its results
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+![alt text](https://github.com/DanielMSousa/python-calculator/blob/main/print.png?raw=true)
