add suggestions

Author: amurph24

src/problem_bank_helpers/problem_bank_helpers.py

@@ -98,7 +98,7 @@ def round_sig(x, sig):
     # avoid precision loss with floats 
     decimal_x = round( Decimal(str(x)) , y )
 
-    return int(decimal_x) if isinstance(x, int) else float(decimal_x)
+    return type(x)(decimal_x)
 
 
 # def round_sig(x, sig_figs = 3):

tests/test_problem_bank_helpers_rounding.py

@@ -141,11 +141,11 @@ def test_sigfigs_float_input_fail():
 # Test round_sig function
 def test_roundsig_int_returns_int():
     """Test rounding an int with specified sigfigs"""
-    assert type(pbh.round_sig(123, 2)) is int
+    assert isinstance(pbh.round_sig(123, 2), int)
 
 def test_roundsig_with_float():
     """Test rounding an float with specified sigfigs"""
-    assert type(pbh.round_sig(123.0, 2)) is float
+    assert isinstance(pbh.round_sig(123.0, 2), float)
 
 def test_roundsig_with_string_fail():
     """Test rounding a string with specified sigfigs"""