One

Question 1

Can we use an undefined variable

Answer 1

No, although a variable doesn’t need to be declared. But it has to be defined before we use it.

Question 2

How to define a complex number

Answer 2

complex_number=real+imagj

Question 3

The underscore symbol

Answer 3

_ represents the last printed expression

Question 4

How to quote a string

Answer 4

single and double quotes both work

Question 5

Raw line option which causes backslash to be silent

Answer 5

print r’something’

Question 6

Concatenate strings

Answer 6

string1+string2

strings next to each other : This only works with literals though, not with variables or expressions

Question 7

Repeat strings

Answer 7

number*string

Question 8

Lists

Answer 8

list_name = [,,,,]

Question 9

List Concatenation

Answer 9

list_one+list_two

Question 10

Append variable to list

Answer 10

list_name.append()

Question 11

Change the content and the size of it

Answer 11

list_name[index]=something

Note: the list cannot be extended this way. The method append must be used.

Question 12

nesting list

Answer 12

[ list,list2,other variables]

Question 13

avoid new line printout

Answer 13

print something,

Question 14

If a Python script is run from another directory, does the searching path include the current directory or the parent directory of the script?

Answer 14

Only the parent directory of the source code is included as a home directory