4. Strings - tomaslt99/Python-language-tutorials GitHub Wiki

3 major data, string values:

Plain Text values. quotation mark is needed only for string.

Number values, quotation mark are not needed for number string.

Boolean value True or False

Code:

# 3 major data, string values:
# 1) Plain Text values. Quotation mark needed only for string.
character_name = "John"
# 2) Number values, quotation mark not needed for number string.
character_age = "35.27"
# Boolean value True or False
is_male = False
print("There once was a man " + character_name + ",")
print("He was year " + character_age + " old.")

Output:

There once was a man John,
He was year 35.27 old.

Updated new value for character_name.

Code:

# Updated new value for character_name.
character_name = "Tom"
print("He really liked the name " + character_name + ".")

Output:

He really liked the name Tom.

Code:

# Print examples
print("First\nLast")

print("First\"Last")
print("First\Last")

phrase = "First Last"
print(phrase)

phrase = "First Last"
print(phrase + "is cool")

Output:

First
Last

First"Last
First\Last

First Last

First Last is cool

Function with strings

Code:

# Example write text in lower case
phrase = "First Last"
print(phrase.lower())

# Example write text in upper case
phrase = "First Last"
print(phrase.upper())

# Example true or false, write "True"if text is uppercase and wiseversa
phrase = "FIRSTirst Last"
print(phrase.isupper())

Output:

first last
FIRST LAST
False

Example Count allthe characters and prints the count.

Code:

phrase = "Count allthe characters and prints
the count."
print(len(phrase))

Output:

#Eexample: Find out X character in a string. Counting start from 0, 1st Character in string is 0 count. "Find" 0123

Code:

phrase = "Find out 1st character in a string"
print(phrase[0])

phrase = "Find out 3st character in a string"
print(phrase[3])

Output:

F
d

Index Function Index function tells where specific character or string is located. Example:

Code:

phrase = "Find where is specific character in a string"
print(phrase.index("F"))

Output:

Example:

Code:

phrase = "Replace word in a sentence. Tom"
print(phrase.replace("Tom","Mike"))

Output:

Replace word in a sentence. Tom