Learn this python code with clearly labeled scratchwork please. explain steps for clairty, on computer is ideal,

 

Assume the following code has been executed. 1 def testi (a, b, c): 2 return a + 2b-c 3 4 def test2(a, b=5): 5 6 7 def 8 return a + b ** 2 test3 (c, b=2, a=0): return testi (c, a, b) For all parts below, enter the returned value of the given expression in the white space. Notes: Your answers should be integers If an error occurs, you should fill in the blanks with the number -1 The following are acceptable answer formats: 2. 49, -1.0 The following are unacceptable answer formats and will count as incorrect: 2.0 (answer should be integer). 49. (answer should be integer). -1 (answer should not be inside quotes) 6.1. What is the returned value of the following expression: test2(2, 1)? 6.2. What is the returned value of the following expression: test2(0) ? 6.3. What is the returned value of the following expression: test2(b=2, a-1) ? 6.4. What is the returned value of the following expression: test3(2, 1, 2)? 6.5. What is the returned value of the following expression: test3(2, 1)? 6.6. What the returned value of the following expression: test3(2, a=1) ?