Fixed docs to be clearer

participants/scipy_001/doc/README.md

@@ -1,5 +1,5 @@
-Ok so I guess you are reading this cuz you wanna use my code. There are some
-functions that do stuf and thats:
+Ok so I guess you are reading this because you would like to use this code. There are some
+functions that do things:
 
     >>> from simple_functions import factorial
     >>> factorial(10)

participants/scipy_001/pr_tutorial/buggy_function.py

@@ -20,13 +20,21 @@ def angle_to_sexigesimal(angle_in_degrees, decimals=3):
     if math.floor(decimals) != decimals:
         raise OSError('decimals should be an integer!')
 
-    hours_num = angle_in_degrees*24/180
+    hours_num = angle_in_degrees * 24 / 180
     hours = math.floor(hours_num)
 
-    min_num = (hours_num - hours)*60
+    min_num = (hours_num - hours) * 60
     minutes = math.floor(min_num)
 
-    seconds = (min_num - minutes)*60
+    seconds = (min_num - minutes) * 60
+    frac = math.floor((seconds % 1) * 10 ** decimals)
+
+    seconds = math.floor(seconds)
+    format_string = '{:02d}:{:02d}:{:02d}.{:0' + str(decimals) + 'd}'
+    return format_string.format(hours, minutes, seconds, frac)
 
-    format_string = '{}:{}:{:.' + str(decimals) + 'f}'
-    return format_string.format(hours, minutes, seconds)
+def angle_test():
+    sex = angle_to_sexigesimal(32.231515, decimals=3)
+    assert sex == '04:17:51.127'
+
+angle_test()

participants/scipy_001/pr_tutorial/tests/test_function.py

@@ -0,0 +1,6 @@
+from pr_tutorial.buggy_function import angle_to_sexigesimal
+
+def test_angle():
+    sex = angle_to_sexigesimal(32.231515, decimals=3)
+    assert sex == '04:17:51.127'
+