exercises for chapter three

#Exercise 3.1
""" use try and except with gross_pay function to calc ot"""

hours = raw_input("Please Enter Hours Worked Here: ")
print ""
pay = raw_input("Please Enter Your Pay Rate Here: ")
print ""
float_hours = float(hours)

float_pay = float(pay)

print float_hours
print float_pay

if float_hours > 40.0:
	ot_hours = float_hours - 40.0
	ot_pay = ot_hours * (float_pay * 1.5)
	gross_pay = ot_pay + (40.0 * float_pay)
	print gross_pay
else: 
	gross_pay = float_hours * float_pay
	print gross_pay

#Exercise 3.2
"""write a script that uses try/except to handle errors"""
hours = raw_input("Please Enter Hours Worked Here: ")
print ""
pay = raw_input("Please Enter Your Pay Rate Here: ")
print ""

try:
	float_hours = float(hours)
except:
	print "please use numeric input"

try:
	float_pay = float(pay)
except: 
    print "please use numeric input"

print float_hours
print float_pay

#exercise 3.3

"""write a script that prompts 0.0 and 1.0 
a >= 0.9
b >= 0.8
c >= 0.7
d >= 0.6 
f < 0.6
"""

grade_in = raw_input("Please enter your grade: ")

try:
    float_grade_in = float(grade_in)
except:
    print "Please use a number between 0.0 and 1.0"

print float_grade_in
print ""

if float_grade_in >= 0.9:
    print "The grade is an A"
elif float_grade_in < 0.9 and float_grade_in >= 0.8:
    print "The grade is an B"
elif float_grade_in >= 0.7 and float_grade_in < 0.8:
    print "The grade is an C"
elif float_grade_in >= 0.6 and float_grade_in < 0.7:
    print "The grade is an D"
else:
    print "The grade is an F"

Python Fiddle

Python Cloud IDE