खोज और बदलना

Python में Regular Expressions

Maria Eugenia Inzaugarat

Data scientist

Substrings खोजना

my_string = "Where's Waldo?"
my_string.find("Waldo")

my_string.find("Wenda")

-1

my_string = "Where's Waldo?"

my_string.find("Waldo", 0, 6)

-1

my_string = "Where's Waldo?"
my_string.index("Waldo")

my_string.index("Wenda")

File "<stdin>", line 1, in <module> 
ValueError: substring not found

my_string = "Where's Waldo?"

try:
    my_string.index("Wenda")
except ValueError:
      print("Not found")

"Not found"

my_string = "How many fruits do you have in your fruit basket?"
my_string.count("fruit")

my_string.count("fruit", 0, 16)

my_string = "The red house is between the blue house and the old house"
print(my_string.replace("house", "car"))

The red car is between the blue car and the old car

print(my_string.replace("house", "car", 2))

The red car is between the blue car and the old house

String manipulation:
- Slice और concatenate
- केस समायोजित करें
- Split और join
- शुरुआत और अंत से कैरेक्टर हटाएँ
- Substrings खोजना
- Occurrences गिनना
- Substrings बदलना

Python में Regular Expressions