from cisc106 import * def f(x): if x < 10: return (x+9) elif x < 5: return (x + 4) elif x <...
Post on 19-Dec-2015
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Examplefrom cisc106 import *def f(x):
if x < 10: return (x+9)
elif x < 5:return (x + 4)
elif x < 0:return (x)
else:return(0)
assertEqual(f(-1), ______)
Aside (strings)def addstrings(par1): return(par1 + "ubba")
assertEqual(addstrings("gub"),"gububba")
def addmore(par1): return(addstrings(par1)
+addstrings(par1))
assertEqual(addmore(“ha"), "_____________")
def dow(x): if (x == 1): return("Sunday") elif (x == 2): return("Monday") elif (x == 3): return("Tuesday") elif (x == 4): return("Wednesday") elif(x == 5): return("Thursday") elif (x == 6): return("Friday") elif (x == 7): return ("Saturday") else: return("Error")
assertEqual(dow(3),"Tuesday")
def makestr(x): if (dow(x) !="Error"): return("Today is " + dow(x)) else: return("Bad day") assertEqual(makestr(4),________)assertEqual(makestr(9),________)
def makestr(x): if (dow(x)=="Error"): return("Bad day") else: return("Today is " + dow(x))
assertEqual(makestr(9),________)assertEqual(makestr(-1),________)
anddef q(x): if (x>5) and (x < 10): return("just enough") elif (x > 5) and (x < 15): return("too much") else: return("no idea")
assertEqual(q(12), "___________")
diff?def q(x): if (x>5) and (x < 10): return("just enough") elif (x > 5) and (x < 15): return("too much") else: return("no idea")
assertEqual(q(7), "________")
def q(x): if (x>5) or (x < 10): return("just enough") elif (x > 5) or (x < 15): return("too much") else: return("no idea")
assertEqual(q(13), "________")
Eval?def q(x,y): if ((x<10) and (x >5)) or ((y <30 ) and (y > 25)): return(“hi") else: return(“low")
What do we need to input to get “hi”?What do we need to input to get “low”?
Nesteddef f(x)
if (x > 10):if ((x%2) == 0):
return(‘a big, even number’)else:
return(‘a big, odd number’)elif (x > 3):
if ((x%2) == 0):return(‘a small, even
number’)else:
return(‘a small, odd number’)else:
return(‘a puny number’)
assertEqual(f(4),____)assertEqual(f(13),____)assertEqual(f(0),_____)
What happens?def ReturnSomething(value):
if value = 1:return “glub”
else:return “blug”
assertEqual(ReturnSomething(1),________)
Nested If:def nested(x,y): if (y < 0): if (x == "abs"): if (((y * -1) % 2)== 0): return(str(y) + "is even") else: return(str(y) + "is odd")
else: if (y % 2 == 0): return(str(y) + "is negative but even") else: return(str(y) + "is negative but odd")
else: return("we really don't care if it's even or odd")
assertEqual(nested(“abs”,-4),_____________)
Same?def q(x): if (x>5) and (x < 10): return("just enough") elif (x > 5) and (x < 15): return("too much") else: return("no idea")
def g(x): if (x > 5): if (x < 10): return("just enough") elif (x < 15): return("too much") else: return("no idea") assertEqual(g(12),________)
What about:assertEqual(g(17),________)
def multof3(x): return(x%3)
def func(x): if(multof3(x) == 0): return(str(x) + " is a multiple of 3") else: return(str(x) + " is not a multiple of 3")
def ismultof3(x): if ((x%3) == 0): return(True) else: return(False)
def func2(x): if (ismultof3(x)): return(str(x) + " is a multiple of 3") else: return(str(x) + " is not a multiple of 3")
def ismultof3(x): if ((x%3) == 0): return(True) else: return(False)
When python executes the following statement, what is the result?(x%3)==0
def ismultof3(x): return((x%3) == 0):
def func2(x): if (ismultof3(x)): return(str(x) + " is a multiple of 3") else: return(str(x) + " is not a multiple of 3")
Function to represent this:#Determines if input value (x) will solve the#problem:# x2 - 3x – 4 = 0#Input: x: a number#Output:a boolean value
def eqcheck(x): return x**2 – 3*x – 4 == 0
Given assertEqual(eqcheck(3),______________)
What is returned? assertEqual(eqcheck(4),______________)
from cisc106 import *
def StateHealth(w,pl,pp,s): return((w * .25) + (pl * .25) + ((100-pp) * .20) + ((100 - s) * .30))
def StateGrade(w,p1,pp,s): if (StateHealth(w,p1,pp,s) > 93): return ("A") elif (StateHealth(w,p1,pp,s) > 84): return('B') elif (StateHealth(w,p1,pp,s) > 75): return('C') elif (StateHealth(w,p1,pp,s) > 66): return('D') else: return('F') assertEqual(StateGrade(80,73,18,19),'C')assertEqual(StateGrade(57,96,55,16),'D')assertEqual(StateGrade(100,100, 0, 0),'A')
Remember?
from cisc106 import *
def StateHealth(w,pl,pp,s): return((w * .25) + (pl * .25) + ((100-pp) * .20) + ((100 - s) * .30))
def StateGrade(w,p1,pp,s):var1 = StateHealth(w,p1,pp,s)
if (var1 > 93): return ("A") elif (var1> 84): return('B') elif (var1> 75): return('C') elif (var1> 66): return('D') else: return('F') assertEqual(StateGrade(80,73,18,19),'C')assertEqual(StateGrade(57,96,55,16),'D')assertEqual(StateGrade(100,100, 0, 0),'A')
Instead
from cisc106 import *
def StateHealth(w,pl,pp,s): return((w * .25) + (pl * .25) + ((100-pp) * .20) + ((100 - s) * .30))
def StateGrade(w,p1,pp,s):var1 = StateHealth(w,p1,pp,s) + 10
if (var1 > 93): return ("A") elif (var1> 84): return('B') elif (var1> 75): return('C') elif (var1> 66): return('D') else: return('F') assertEqual(StateGrade(80,73,18,19),‘B’)assertEqual(StateGrade(57,96,55,16),‘C')assertEqual(StateGrade(100,100, 0, 0),'A')
Add a Curve to the Grade?
More Variablesfrom cisc106 import *def calcsomething(par1): if ((par1%2) == 1): return(par1 * -1) else: return(par1)
def finddif(par1,par2): var1 = calcsomething(par1) if (var1 < 0): var1 = 0 var2 = calcsomething(par2) if (var2 < 0): var2 = 0 if ((var1 - var2) < 0): return(var2 - var1) else: return(var1 - var2)
assertEqual(finddif(3,7),____)assertEqual(finddif(4,7),____)assertEqual(finddif(2,4),____)
def MakeDate(par1,par2,par3): var1 = "Today is " var1 += GetDOW(par1) var1 += ", " var1 += GetMonth(par2) var1 += " " var1 += "20"+str(par3) return(var1)
def GetMonth(x): if (x == 1): return("January") elif (x == 2): return("February") elif (x == 3): return("March") elif (x == 4): return("April") elif(x == 5): return("May") elif (x == 6): return("June") elif (x == 7): return ("July") elif (x == 8): return("August") elif (x == 9): return("September") elif (x == 10): return("October") elif(x == 11): return("November") elif (x == 12): return("December")
def GetDOW(x): if (x == 1): return("Sunday") elif (x == 2): return("Monday") elif (x == 3): return("Tuesday") elif (x == 4): return("Wednesday") elif(x == 5): return("Thursday") elif (x == 6): return("Friday") elif (x == 7): return ("Saturday")
if statements: Same?def fu1(x): y = x*3 if (y < 0): y = y * -1 elif (y < 10): y = y + 4 return(y)assertEqual(fu1(-
2),__)
def fu2(x): y = x*3 if (y < 0): y = y * -1 if (y < 10): y = y + 4 return(y)assertEqual(fu2(-
2),__)
What about?def f(x): if (x == 1): return x else: return(x + f(x-1))
assertEqual(f(4),______)
def f2(x): if (x == 1): return str(x) else: return(str(x) + f2(x-1))
assertEqual(f2(4),_______)
Try:def f(x):
return(x + f(x-1))
assertEqual(f(4),______)
def f2(x): if (x == 1): return x else: return(x + f2(x+1))
assertEqual(f2(4),_____)
def f3(x): if (x == 1): return x else: return(x + f2(x-2))
assertEqual(f2(4),_______)