Python strings are essential for text processing, allowing for character collection and manipulation. Learn about their immutability, creation, modification, and advanced techniques like substitution and reversal. Understanding string length and segmentation is also covered, vital for data parsing and formatting.
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Python strings are sequences of characters used to store and manipulate text
Strings in Python cannot be changed in place, ensuring data integrity and preventing unintended side-effects
Strings can be created by enclosing characters in quotes and manipulated through operations such as concatenation, replication, indexing, and slicing
Single quotes are suitable for strings without single quote characters
Double quotes are preferable for strings with single quote characters
Triple quotes are useful for strings spanning multiple lines or containing both single and double quotes, simplifying code readability
The replace() method allows for replacing parts of a string with another string, with an option to limit the number of substitutions
The re module offers regular expressions for more complex pattern-based substitutions, utilized through the sub() method
Strings can be reversed using slicing with a step of -1 or more intricate methods such as loops, recursion, or list comprehensions
The split() method divides a string into a list of substrings based on a specified delimiter, crucial for accurate string segmentation
The len() function counts every character in a string, including spaces and special characters, essential for precise length assessment in data parsing and formatting operations
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Python string immutability
Once created, a Python string's contents cannot be altered; modifications create new strings.
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Python string quotation types
Python strings can be enclosed in single, double, or triple quotes.
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Python string composition
Python strings are sequences of characters including letters, digits, symbols, and spaces.
