INSTRUCTION AND PROBLEMS Write a Python program for each of the problems in this lab. Please use PyCharm to type and test your programs. Submit the Python files to Blackboard for credit. In this lab, you should submit 4 Python files, one for each problem PROBLEM I Energy consumption is measured in units of kilowatt hours (kWh). The more kWh a household use in a month, the higher the energy bll. A power company charges customers $0.12 per kWh for the first 500 kWh. After the first 500 kWh, the rate is $0.15 per kWh. Write a program to calculate energy charge. You must write and use the following two functions (a) A main function: Ask the user to enter number of kWh used. Call the bill calculator function and pass number of kWh used to it as an argument. CSC121 Lab 07 Page 2 (b)A bill calculator function: This function has a parameter to receive number of kWh used. Calculate and display the energy charge. The following is an example Enter kilowatt hours used: 510 Please pay this amount: 61.50 Save your Python program in a file named Lab07P1.py. Submit the file to Blackboard for credit