pimento[w07]$ python3 checkbook.py
Enter your balance: 100
Enter a choice: withdraw (w) deposit (d) quit (q) d
deposit 100
Enter a choice: withdraw (w) deposit (d) quit (q) d
deposit 100
Enter a choice: withdraw (w) deposit (d) quit (q) d
deposit 100
Enter a choice: withdraw (w) deposit (d) quit (q) w
withdraw 100
Enter a choice: withdraw (w) deposit (d) quit (q) q
pimento[w07]$ python3 checkbook.py
Enter your balance: 100
Enter a choice: withdraw (w) deposit (d) quit (q) d
Enter an amount to deposit: 50
Enter a choice: withdraw (w) deposit (d) quit (q) q
pimento[w07]$ python3 checkbook.py
Enter your balance: 100
Enter a choice: withdraw (w) deposit (d) quit (q) d
Enter an amount to deposit: 50
New balance:  150.0
Enter a choice: withdraw (w) deposit (d) quit (q) d
Enter an amount to deposit: 100000000
New balance:  100000100.0
Enter a choice: withdraw (w) deposit (d) quit (q) w
withdraw 100
Enter a choice: withdraw (w) deposit (d) quit (q) w
withdraw 100
Enter a choice: withdraw (w) deposit (d) quit (q) w
withdraw 100
Enter a choice: withdraw (w) deposit (d) quit (q) q
pimento[w07]$ python3 checkbook.py
Enter your balance: 1000
Enter a choice: withdraw (w) deposit (d) quit (q) w 1000
Invalid input
Enter a choice: withdraw (w) deposit (d) quit (q) w
Enter an amount to widthdraw: 1000
New balance:  0.0
Enter a choice: withdraw (w) deposit (d) quit (q) d
Enter an amount to deposit: 50
New balance:  1050.0
Enter a choice: withdraw (w) deposit (d) quit (q) q
pimento[w07]$ python3 checkbook.py
Enter your balance: 1000
Enter a choice: withdraw (w) deposit (d) quit (q) w
Enter an amount to widthdraw: 1000
New balance:  0.0
Enter a choice: withdraw (w) deposit (d) quit (q) d
Enter an amount to deposit: 50
New balance:  50.0
Enter a choice: withdraw (w) deposit (d) quit (q) w
Enter an amount to widthdraw: 300
Insufficient funds!
Enter a choice: withdraw (w) deposit (d) quit (q) w
Enter an amount to widthdraw: 1
New balance:  49.0
Enter a choice: withdraw (w) deposit (d) quit (q) d
Enter an amount to deposit: 40
New balance:  89.0
Enter a choice: withdraw (w) deposit (d) quit (q) q
pimento[w07]$ ls
all-averages.py   design-checkbook.py  skybear.ogv
all-grades.txt	  grades.txt	       skybear.py
average.py	  lol.py	       squareText.py
checkbook-2.0.py  shopping.py
checkbook.py	  shoppingList.txt
pimento[w07]$ firefox skybear.ogv
pimento[w07]$ cat shoppingList.txt
apples
bananas
flour
soap
cereal
pimento[w07]$ python3 shopping.py

pimento[w07]$ python3 shopping.py
apples

bananas

flour

soap

cereal

pimento[w07]$ python3 shopping.py
apples
bananas
flour
soap
cereal
pimento[w07]$ cat grades.txt
99
79
51
92
56
89
63
93
61
62
74
75
67
74
68
92
88
97
65
81
pimento[w07]$ python3 average.py
average =  76.3
pimento[w07]$ python3 average.py
average =  76.3
pimento[w07]$ python3 average.py
average =  76.3
pimento[w07]$ ls
all-averages.py      grades.txt
all-grades.txt	     lol.py
average.py	     shopping.py
average.txt	     shoppingList.txt
checkbook-2.0.py     skybear.ogv
checkbook.py	     skybear.py
design-checkbook.py  squareText.py
pimento[w07]$ cat average.txt
76.3pimento[w0python3 average.py
average =  76.3
pimento[w07]$ cat average.txt
76.3
pimento[w07]$