CS: Python String Methods

Question 1

What are strings?

Answer 1

They are sequences of characters represented in a pair of quotation marks.

Question 2

Python allow for the string to be in…

Answer 2

pairs of single or double quotes.

Question 3

What is concatenating strings?

Answer 3

It is joining 2 strings using the + operator.
Ex: print(word1+word2)

Question 4

How can you repeat a string over and over?

Answer 4

Using *
Ex: print(str*2)

Question 5

What are the functions to convert string into uppercase characters? Give an example.

Answer 5

upper()
ex: print(text1.upper())

Question 6

What are the functions to convert string into lowercase characters? Give an example.

Answer 6

lower()
ex: print(text1.lower())

Question 7

How do you get the size of a string?

Answer 7

You get it by using the len() function.
ex: print(len(“Uni”))
ex: print(len(name))

Question 8

What’s the output?
text1 = “Python”
text2 = “Hello, Jon!”
print (“The text1 is: “ + text1)
print(“Length of text is as follows:”)
print(len (text1))
print (“The text2 is: “ + text2)
print(“Length of text2 is as follows:”)
print(len (text2))

Answer 8

The text1 is: Python
Length of text is as follows:
6
The text2 is: Hello, Jon!
Length of text is as follows:
11

Question 9

How do you count how many of a specific character is in a string? Give an example.

Answer 9

Using the word.count function.
Ex: print(potato.count(‘h’))

Question 10

How do you replace a certain phrase with another in a string? Give an example.

Answer 10

Using the txt.replace function.
Ex: print(text.replace(“bananas”,”apples”)) -> banana gets replaced with apples

Question 11

How do you capitalize the first letter?

Answer 11

Using the capitalize() function.
It also converts all the other characters to lowercase.
Ex:print(word.capitalize())

Question 12

How do you print a specific letter from the string?

Answer 12

Using the string slice function.
Ex: print(word[0])

Question 13

What does print(smthn[:]) do?

Answer 13

It prints the entire string

Question 14

What does print(smthn[-5]) do?

Answer 14

It prints the 5th character from the right

Question 15

Is (word[0]) going to print the first character?

Answer 15

Yes

Question 16

How do you print certain index positions of characters inside strings?

Answer 16

Using the index function.
Ex: print(txt[6:8])
(It stops before the last index, which is 7 in our case.)