"Python Programming Quick Start - Automate Tedious Work" 5. String Operation

皓月光兮非自明

"Python Programming Quick Start - Automate Tedious Work" 5. String Operation [Copy link]

5. String Operations

1. Creating a string

str1 = "Hello, EEWorld! This is a Python string."

(II) Connection string

str1 = "Hello" + " " + "EEWorld"

print(str1)

# Output: Hello EEWorld

(III) Cropping operation

substring = str1[6:12]

print(substring)

# Output: EEWorld

(IV) Finding substrings

index = str1.find("EEWorld")

print(index)

# Output: 6

(V) Replace substring

replace = str1.replace("EEWorld", "World")

print(replace)

# Output: Hello, World! This is a Python string.

(VI) Splitting a string

split_string = str1.split(" ")

print("Split string:", split_string)

# Output: [Hello, EEWorld!, 'This', 'is','a','Python','string.']

(VII) Case conversion

lower_string = str1.lower()

upper_string = str1.upper()

print(lower_string)

print(upper_string)

# Output: [hello, eeworld!, 'this', 'is','a','python','string.']

# Output: [HELLO, EEWORLD!, 'THIS', 'IS','A','PYTHON','STRING.']

(VIII) Determine whether a string starts or ends with a specific substring

start = str1.startswith("Hello")

end = str1.endswith("string.")

print(start)

print(end)

# Output: True

# Output: True

9. Determine whether a string contains only letters or numbers

is_alpha = str1.isalpha()

is_num = str1.isnumeric()

print(is_alpha)

print(is_num)

# Output: True

# Output: False

lugl4313820

I have used some of these operations before, but for some of them, such as string.startswith which starts with something, I have heard of them for the first time. Thanks for sharing.

皓月光兮非自明

lugl4313820 posted on 2024-6-6 07:42 I have used some of these operations before, but I have never heard of some of them, such as string.startswith, which starts with something. Thanks for sharing.

If you want C/C++, you can only modify the character matching function to achieve it. Python independently encapsulates some small function functions, and you can directly call them by checking the manual. It is indeed much more convenient

lugl4313820

The bright moonlight is not self-evident. Published on 2024-6-6 08:55 If you want C/C++, you can only modify the character matching function to achieve it. Python independently encapsulates some small function functions. You can just call them directly by checking the manual...

Thank you so much for sharing.