PYTHON

Question 1

What are the functions of Python?

Answer 1

creating web applications, and workflows, connecting database systems, handling big data

Question 2

pyhton uses____ to complete a command

Answer 2

New lines

Question 3

Python relies on _____ to define scope - loops, functions and classes

Answer 3

Indentation

Question 4

Does python have a command for declaring a variable?

Answer 4

No

Question 5

What is the purpose of comments in Python?

Answer 5

• make code readable
• explaims code
• prevents execution or I think error when testing code

Question 6

How to get data type of a variable?

Answer 6

type() function

Question 7

______ is the method of specifying a type of variable

Answer 7

Casting

Question 8

What are the different kinds of variables? Explain

Answer 8

String - A sequence of characters (letters, digits, symbols) enclosed in quotes
Float - Numbers that include a decimal point. They are used for representing real numbers
Integer - Whole numbers, without any decimal points. They can be positive, negative, or zero.

Question 9

b = 14
B= “David”
# B will not overwrite b
What is this an example of?

Answer 9

Case-sesntivity

Question 10

What are the rules for python variables?

Answer 10

• must start with a letter or underscore character and not a number
• can only contain alpha-numeric characters and underscores

Question 11

” You can assign values to multiple variables in one line in python” - T/F

Answer 11

True

Question 12

_____ function allows to output variables

Answer 12

Print

Question 13

what are strings in python?

Answer 13

array of bytes representing unicode characters

Question 13

how can u output multiple variables?

Answer 13

Comma and + sign

Question 14

what is the best way to output different kinds of variables using print function?

Answer 14

COMMA

Question 14

does python have a character data type?

Answer 14

no, a character is a string eith length of one

Question 14

every number is true using bool() fxn except____

Answer 14

0

Question 14

Can you convert from one type of numeric variable to another in python?

Answer 14

Yes, except not complex numbers that will give an error

Question 14

What are the numeric types in python?

Answer 14

float, integer and complex

Question 15

what formula to use to get the exact length of a string?

Answer 15

print(x[len(x)-1])

Question 15

How to get the length of a string?

Answer 15

using len() function

Question 16

what phrases to use to check certain phrase or character in the string?

Answer 16

in or not in

Question 16

how can we access elements or characters of a string?

Answer 16

using this bracket type [ ]

Question 16

what are the various in built functions of strings?

Answer 16

1. upper - lower case
2. replace
3. split

Question 17

____ is the technique of getting back a range of characters using a colon to separate

Answer 17

Slice syntax
print (a[2:6])

Question 17

_____ helps in knowing if the expression is true or false in python

Answer 17

Booleans

Question 18

what do the following python assignment operators mean?
1. x +=5
2. -= 5
3. x*=5
so on and so forth

Answer 18

1. x = x+5
2. x = x-5
3. x= x*5

Question 19

What do the following comparison operators imply?

!=
>
<
>=
<=

Answer 19

equal
not equal
greater than
less than
greater than or equal to
lower than or equal to

Question 20

Name the python logical operators and their functions

Answer 20

1. and - returns True if both statements are true
2. OR - returns true if one statement is true
3. Not - reverses the result

Question 21

What are the python membership operators, explain functions

Answer 21

1. In = returns true if a sequence with the specified values is present. EX: X in Y
2. not in = returns true if a sequence with a specified value is not present like x not in y

Question 22

the ____ keyword is used for conditional evaluation and the print instruction will only generate when the ____ condition is met

Answer 22

IF

Question 23

Python relies on ____________(whitespace at the beginning of a line) to define the scope in the code.

Answer 23

indentation

Question 24

____ keyword catches anything which isnt caught by the preceding condition

Answer 24

Else
when the if condition evaluates to false, else condition is executed

Question 25

What is the role of the elif keyword?

Answer 25

if previous conditions like, for eg value relation b/w 2 numbers is not true, then try this condition and occurs after if and before else condition, can have multiple elif’s