# দুটি স্ট্রিং যুক্ত করা
first_name = "John"
last_name = "Doe"
full_name = first_name + " " + last_name
print(full_name) # Output: John Doe
# সংখ্যা এবং স্ট্রিং যুক্ত করা
text = "The number is " + str(42)
print(text) # Output: The number is 42
# স্ট্রিং পুনরাবৃত্তি
message = "Hello! "
repeated = message * 3
print(repeated) # Output: Hello! Hello! Hello!
# প্যাটার্ন তৈরি
pattern = "=" * 20
print(pattern) # Output: ====================
# String: P y t h o n
# Index: 0 1 2 3 4 5
# Reverse: -6 -5 -4 -3 -2 -1text = "Hello World"
print("Hello" in text) # True
print("Python" in text) # False
print("!" not in text) # Truetext = "Hello World"
print(text[0:5]) # Hello
print(text[6:]) # World
print(text[::-1]) # dlroW olleH
print(text[::2]) # HloWrdtext = "Python"
for char in text:
print(char)
# Output: P, y, t, h, o, n
text = "Python"
i = 0
while i < len(text):
print(text[i])
i += 1
text = "Hello"
for i in range(len(text)):
print(f"Index {i}: {text[i]}")
text = "Hello"
for i, char in enumerate(text):
print(f"Index {i}: {char}")
text = "Hello World"
print(len(text)) # 11
text = "hello world"
print(text.capitalize()) # Hello world
text = "hello world python"
print(text.title()) # Hello World Python
text = "hello.txt"
print(text.endswith(".txt")) # True
text = "hello world"
print(text.startswith("hello")) # True
text = "Hello World"
print(text.lower()) # hello world
text = "Hello World"
print(text.upper()) # HELLO WORLD
text = "hello world hello"
print(text.count("hello")) # 2
text = "hello world"
print(text.find("world")) # 6
text = "hello world"
print(text.index("world")) # 6
text = "Hello123"
print(text.isalnum()) # Truetext = "Hello"
print(text.isalpha()) # Truetext = "12345"
print(text.isdigit()) # Truetext = "hello"
print(text.islower()) # Truetext = "HELLO"
print(text.isupper()) # Truetext = " "
print(text.isspace()) # Truetext = " hello"
print(text.lstrip()) # 'hello'text = "hello "
print(text.rstrip()) # 'hello'text = " hello "
print(text.strip()) # 'hello'text = "Hello World"
new_text = text.replace("World", "Python")
print(new_text) # Hello Pythonwords = ["Hello", "World", "Python"]
result = " ".join(words)
print(result) # Hello World Pythontext = "Hello-World-Python"
result = text.partition("-")
print(result) # ('Hello', '-', 'World-Python')text = "Hello World Python"
words = text.split(" ")
print(words) # ['Hello', 'World', 'Python']