Create counter app.py

counter app.py

@@ -0,0 +1,31 @@
+import flet as ft
+from flet import *
+
+def main(page :ft.Page):
+  page.title="counter app"
+  page.vertical_allignment= "center"
+  page.theme_mode = "system"
+
+  text_input=ft.TextField(value="0", text_align="center")
+
+  def minus_clicked(e):
+    text_input.value=int(text_input.value) -1
+    page update
+
+  def plus_clicked(e):
+    text_input.value=int(text_input.value)+1
+    page.update
+
+  page.add(
+    ft.Row(
+      controls[
+        ft.IconButton(ft.icons.REMOVE, on_click=minus_clicked),
+        text_input,
+        ft.IconButton(ft.icons.PLUS, on_click=plus_clicked),
+
+      ],
+      alignment="center"
+    )
+  )
+
+ft.app(target=main)