name = 'Huahua'
score = 123.456789

print('name = ' + name + ', score = ' + str(score))
print('name = %s, score = %.3f' % (name, score))
print('name = {name}, score = {score:.3f}'.format(name=name, score=score))
print('name = {name}, score = {score:.3f}'.format(name='Huahua', score=123.456789))

print(f'name = {name}, score = {score:.3f}') # Python 3.6
print(f'{name = }, {score = :.3f}') # Python 3.8

def add(a, b):
  return a + b

k = 1
print(f'{k = }, {add(k, 2) = }') # k = 1, add(k, 2) = 3