Fix code style issues with Black

Author: lint-action

2_intermediate/chapter12/practice/student_class.py

@@ -3,5 +3,3 @@
 # A raiseHand method which prints out the student name followed
 # by “is now raising their hand.” A growOlder method that makes the
 # student older by 1 year.
-
-

2_intermediate/chapter12/solutions/student_class.py

@@ -4,8 +4,8 @@
 # by “is now raising their hand.” A growOlder method that makes the
 # student older by 1 year.
 
-class Student:
 
+class Student:
     def __init__(self, name, age):
         self.name = name
         self.age = age
@@ -15,4 +15,3 @@ def raiseHand(self):
 
     def growOlder(self):
         self.age += 1
-

2_intermediate/chapter12/solutions/teacher_class.py

@@ -7,8 +7,8 @@
 
 # Student class implemented below. Teacher class uses it.
 
-class Student:
 
+class Student:
     def __init__(self, name, age):
         self.name = name
         self.age = age
@@ -18,9 +18,9 @@ def raiseHand(self):
 
     def growOlder(self):
         self.age += 1
-        
-class Teacher:
 
+
+class Teacher:
     def __init__(self, name, age, students):
         self.name = name
         self.age = age
@@ -34,4 +34,3 @@ def graduate(self):
         for student in self.students:
             student.age += 1
             print(student.age)
-