python for beginners | python full course
In Python, strings are sequences of characters. They can be created using single or double quotes, and can be manipulated using various built-in functions. Here are some common string operations in Python:
Concatenation: You can concatenate two or more strings using the `+` operator. For example, `str1 + " " + str2` creates a new string that combines the two given strings.
Substring extraction: You can extract a substring from a string using indexing. For example, `str = "Hello, world!"` and `substring = str[7:11]` extracts the substring "world!" from the string `str`.
String formatting: You can format strings using the `%` operator. For example, `str1 = "The current date is %s" % current_date` creates a new string that contains the current date.
String methods: Python provides several built-in methods for working with strings, such as `lower()`, `upper()`, `strip()`, `replace()`, and `len()`.
String literals: You can use triple quotes (`"""` or `""""`) to create a raw string literal that preserves the string's line breaks and other characters.
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