refactor: organization

src/main.py

@@ -6,14 +6,14 @@ from modules.math import (
 from modules.probability import (
 	test_probability_module
 )
+from modules.statistics import (
+	test_statistics_module
+)
 from modules.strings import t_strings
 
 if __name__=="__main__":
 	t_strings()
 
-	print(">> Math module")
 	# test_math_module()
-	print(">>>>>>>>>>>>>>>>>>>>")
+	# test_probability_module()
-	print(">> Probability module")
+	test_statistics_module()
-	test_probability_module()
-	print(">>>>>>>>>>>>>>>>>>>>")

src/modules/math.py

@@ -91,6 +91,7 @@ def t_calculate_integral(f, init, end, symbol):
     return integrate(f, (symbol, init, end))
 
 def test_math_module():
+	print("=== Math module ===")
 	t_exponent(2,8)
 	print(t_compound_interest(100, 20 / 100, 2, 12))
 	print(t_compound_interest_algorigthm(100, 20 / 100, 2, 12))

src/modules/probability.py

@@ -102,6 +102,7 @@ class Exercises:
 
 
 def test_probability_module():
+	print("=== Probability module ===")
 	print(">> Binomial distribution")
 	BinomialDistribution.example()
 	BinomialDistribution.from_scratch(0.9, 10)

src/modules/statistics.py

@@ -0,0 +1,2 @@
+def test_statistics_module():
+	print("=== Statistics module ===")