final small touches

README.md

@@ -122,23 +122,23 @@ from financecalculator2025.n_periods import n_periods
 ```
 payment = calculate_contribution(principal=20000, future_value=0, annual_rate=5, n_periods=24)
 ```
-
+  
 - If you need to calculate future value of an investment, you can use `future_value` function:
 
 ```
 future_value = future_value(principal=5000, annual_rate=7, n_periods=36, contribution=200)
 ```
 
-<img src="https://github.com/UBC-MDS/FinanceCalculator2025/blob/main/img/fv_df_output.png?raw=true">
-
+<img src="https://github.com/UBC-MDS/FinanceCalculator2025/blob/main/img/fv_df_output.png?raw=true" height="75">
+  
 - If you need to calculate present value for a target amount, you can use `present_value` function:
 
 ```
 present_value = present_value(principal=5000, annual_rate=4, n_periods=120, contribution=50)
 ```
 
-<img src="https://github.com/UBC-MDS/FinanceCalculator2025/blob/main/img/pv_df_output.png?raw=true">
-
+<img src="https://github.com/UBC-MDS/FinanceCalculator2025/blob/main/img/pv_df_output.png?raw=true" height="75">
+  
 -  If you need to calculate the number of months to reach a goal, , you can use `n_periods` function:
 
 ```

src/financecalculator2025/n_periods.py

@@ -80,9 +80,5 @@ def n_periods(principal, annual_rate, future_value, contribution=0):
     # return a positive integar
     n_periods =  max(1, round(n_periods))
 
-    # warning: if n_periods less than 5
-    if 1 <= n_periods <= 5:
-        warnings.warn("The number of periods is unusually low. Did you accidentally input years instead of months?", UserWarning)
-
     return n_periods
 

tests/test_n_periods.py

@@ -9,7 +9,7 @@ def test_n_periods_positive_values():
 
 def test_principal_equal_to_future_value():
     # situation with principal = future_value, should return 0
-    assert n_periods(1000, 5, 1000, contribution=100) == 0
+    assert n_periods(1000, 6, 1000, contribution=100) == 0
 
 def test_n_periods_negative_values():
     # situation with all negative
@@ -63,13 +63,6 @@ def test_n_periods_low_interest_warning():
         assert len(w) == 1
         assert issubclass(w[-1].category, UserWarning)
 
-# Test warning appears for n_periods < 6 months
-def test_n_periods_low_periods_warning():
-    with warnings.catch_warnings(record=True) as w:
-        n_periods(1000, 5, 1500, contribution=100)
-        assert len(w) == 1
-        assert issubclass(w[-1].category, UserWarning)
-
 # Test warning appears for negative annual_rate:
 def test_n_periods_negative_interest_warning():
     with warnings.catch_warnings(record=True) as w: