Remove is_number(), added is_float() and is_int() to Python (#1665)

* Remove is_number(), add is_float() and is_int()

* Add is_float() and is_int()

src/createContext.ts

@@ -705,7 +705,8 @@ export const importBuiltins = (context: Context, externalBuiltIns: CustomBuiltIn
       defineBuiltin(context, 'str(val)', (val: any) => stringify(val, 2, 80), 1)
       defineBuiltin(context, 'error(str)', misc.error_message, 1)
       defineBuiltin(context, 'prompt(str)', prompt)
-      defineBuiltin(context, 'is_number(val)', misc.is_number)
+      defineBuiltin(context, 'is_float(val)', pylib.is_float)
+      defineBuiltin(context, 'is_int(val)', pylib.is_int)
       defineBuiltin(context, 'is_string(val)', misc.is_string)
       defineBuiltin(context, 'is_function(val)', misc.is_function)
       defineBuiltin(context, 'is_boolean(val)', misc.is_boolean)

src/stdlib/pylib.ts

@@ -1,5 +1,13 @@
 import { Value } from '../types'
 
+export function is_float(v: Value) {
+  return typeof v === 'number'
+}
+
+export function is_int(v: Value) {
+  return typeof v === 'bigint'
+}
+
 export function __py_adder(x: Value, y: Value) {
   if (typeof x === typeof y) {
     return x + y