Exam 1

Question 1

variables

Answer 1

named storage bins that hold onto values

Question 2

assignment statements

Answer 2

a line of code that assigns a value to a variable

Question 3

float

Answer 3

numbers with decimals
float()

Question 4

integers

Answer 4

numbers without decimals
int()

Question 5

string

Answer 5

text
str()

Question 6

comments

Answer 6

used to explain code
#

Question 7

variable naming conventions

Answer 7

• cannot start with numbers
• no numbers after _
• all lowercase

Question 8

expression

Answer 8

any mathematic calculation found on the right side of a statement

ex: x + 3

Question 9

//

Answer 9

integer division

Question 10

%

Answer 10

remainder division

Question 11

input()

Answer 11

accepts a value from the user (always stored as a string)

Question 12

opening a file

Answer 12

with open(“file_name”, “r”) as infile:

Question 13

reading a file line

Answer 13

infile.readline()

Question 14

skipping a file line

Answer 14

next(infile)

Question 15

plotting import statement

Answer 15

import matplotlib.pyplot as plt

Question 16

main plotting functions (5)

Answer 16

Plt.plot(x, y, marker)
Plt.title(title)
Plt.xlabel(xlabel)
Plt.ylabel(ylabel)
Plt.show( )

Question 17

boolean

Answer 17

a data type that can only store 2 values (True or False)

Question 18

comparison operators

Answer 18

> , <, <=, >=, ==, !=

Question 19

for loop

Answer 19

for item in sequence:

Question 20

range function

Answer 20

range(start, stop, step)
not inclusive of “stop”

Question 21

accumulator loops

Answer 21

initialize, iterate, update, report

Question 22

indexing

Answer 22

list[start:stop:step]
not inclusive of “stop”

Question 23

concatenating lists

Answer 23

list + list

Question 24

adding to lists

Answer 24

list.append

Question 25

length function

Answer 25

len()

Question 26

split function

Answer 26

string.split() splits a string on a space or other specified character and creates a list

Question 27

replace function

Answer 27

string.replace(a, b) replaces all a with b

Question 28

strip function

Answer 28

string.strip() removes all white space

Question 29

lower case / capital function

Answer 29

string.upper / string.lower

Question 30

checking for all numbers in a string

Answer 30

string.isdigit()

Question 31

checking for all letters in a string

Answer 31

string.isalpha()

Question 32

insert in a list

Answer 32

list.insert(position, element)

Question 33

remove from a list

Answer 33

list.remove(element)

Question 34

remove the last element from a list

Answer 34

list.pop()

Question 35

finding the index number

Answer 35

list.index(element)

Question 36

while loop

Answer 36

while condition:

Question 37

reading a CSV

Answer 37

1. Create an empty list 2. Use the with open function 3. For row in file: a. List.append(row.strip())