STRING MODULE IN PYTHON Python-ல் Str……
String module
Python string module என்பது characters பற்றிய useful constants, text formatting tools, template substitution போன்ற facilities கொடுக்கும் built-in standard library module. Simple definition: string module = Predefined character collections …
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68 programs 10 MCQs v3
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Algorithm
1. String object methods 2. s……
இவை இரண்டும் same அல்ல.…
Explanation
Example
text = "python"…
Explanation
இங்கே upper() என்பது String m……
Explanation
இங்கே string என்பது Python St……
Definition
Python string module என்பது characters பற்றிய useful constants, text formatting tools, template substitution ……
Simple Explanation
நாம் ஒரு password generator எழுதுகிறோம் என்று வைத்துக்கொள்வோம். அதில்: A-Z a-z 0-9 special characters எல்லாம்……
Explanation
Import
string module பயன்படுத்த முதலில்: import string பிறகு……
Program
Python Program
Comparison
String module vs string data type
இந்த difference மிகவும் முக்கியம். String data type text = "Python" இங்கே: "Py……
Program
Example
Important
Important string module members
Mainly learn these: ascii_lowercase ascii_uppercase ascii_letters digits hexdigi……
Important
1. string.ascii_lowercase…
Definition
English lowercase letters a ம……
Explanation
Syntax
string.ascii_lowercase…
Explanation
ascii_lowercase என்பது function அல்ல. அதனால்: string……
Important
ascii_lowercase contains exact……
Important
1. string.ascii_uppercase…
Important
English uppercase letters: A-Z…
Algorithm
1. string.ascii_letters…
Lowercase + uppercase English……
Concept
ascii_letters = ascii_lowercase + ascii_upperca……
Algorithm
1. string.digits…
Definition
ASCII decimal digit character……
Important
string.digits returns characters. Conceptually: "0123456789" ……
Algorithm
1. string.hexdigits…
Hexadecimal digits-க்கு valid……
Explanation
Typical output: 0123456789abcdefABCDEF Hexadecimal……
Explanation
Hex explanation
Hexadecimal base: Base 16 Valid symbols: 0 1 2 3 4 5 6 7……
Explanation
1. string.octdigits…
Explanation
Octal number system-ல் பயன்பட……
Octal base: Base 8 Valid digi……
Algorithm
1. string.punctuation…
Definition
Common ASCII punctuation char……
Explanation
Output includes characters such as: !"#$%&'()*+……
Explanation
Use case
Password generation-ல்: import string characters = string.ascii_letters + ……
Explanation
1. string.whitespace…
Definition
Whitespace characters collect……
Explanation
Typical output representation: ' \t\n\r\x0b\x0c' இதில்: space tab newli……
Explanation
என்று print செய்தால் spaces, tabs, newlines visuall……
List
1. string.printable…
Definition
Printable ASCII-related character collection. இதில் br……
Concept
Conceptually: string.printable = digits + ascii_letters + punct……
Comparison
Important comparison
Program
Program: display all constants
Algorithm
1. string.capwords()…
Definition
capwords() ஒரு sentence-ல் உள்ள words-……
Explanation
Syntax
string.capwords(text)…
Explanation
text = "python programming la……
Explanation
Conceptually இது
1. Words-ஐ split செய்கிறது 2. ஒவ்வொ……
Explanation
Example
python programming language Step 1: python programming language St……
Program
Example
Explanation
text = "python-java-c"…
Comparison
Capwords vs title
இவை similar போல தெரியும்.…
Explanation
Example
text = "python programming"…
Program
And
ஆனால் அவற்றின் internal behavior exact same அல்ல. Exam/basic unde……
Algorithm
1. string.Template…
Definition
Template என்பது simple text substitution செய்ய பய……
Explanation
from string import Template Template class import செய்கிறோம். text = Template("Hello ……
Explanation
Multiple placeholders
from string import Template text = Template("$name is le……
Explanation
Template with dictionary
from string import Template text = Template("$name ……
Explanation
Substitute
substitute() எல்லா required p……
Program
Example
Explanation
இங்கே course value missing. அ……
List
1. safe_substitute()…
Explanation
Missing placeholder இருந்தாலு……
Program
Example
course missing. ஆனால் program……
Comparison
Substitute vs safe substitute
Real Life Example
Real-time template example
Suppose student certificate message: from string import Template template = Templat……
Algorithm
1. string.Formatter…
Definition
Formatter class advanced string formatting operations-க்கு பயன்படும். Basic example:……
Simple Explanation
Normally நாம்: "Name: {}".format(name) use செய்கிறோம். Internally advanced formatting control தேவைப்பட்ட……
Explanation
Formatter advanced idea
Formatter class மூலம்: format() parse() get_field() get_value() format_field() convert_field() போன்……
Explanation
String module constants are strings
Important concept: import string print(type(strin……
இந்த predefined constants எல்……
Program
Example
Explanation
character = "A"…
Explanation
Digit check using string module
import string ch = "7" if ch ……
Method approach: ch = "7"…
Program
Module approach
But these concepts are not always identical for all Unicode numeric characters. string.digits spe……
Real Life Example
Real-time example: password character set
import string characters = ( ……
Real Life Example
- string.digits - string.punc……
Real Life Example
) print(characters) Now characters contains: Lowercase letters Up……
Explanation
Program: simple random password
string module alone random cha……
Explanation
password = ""…
Explanation
Output ஒவ்வொரு run-லும் diffe……
Explanation
string.ascii_letters All English letters. string.digits 0-9. random.c……
Important
Secure real-world passwords/tokens gener……
Real Life Example
Real-time example: remove punctuation
import string text = "Hello, Python!" result = ""……
Check each character. H Not punctuation K……
Real Life Example
Real-time example: count digits
import string text = "A12B369" count = 0……
Digits: 1 2 3 6 9 Total: 5…
Real Life Example
Real-time example: count letters
import string text = "Python369" count = 0 f……
Concept
Ascii important concept
ascii_letters, ascii_lowercase, ……
Program
Example
But Tamil letter: print("அ" i……
ஏனெனில் string.ascii_letters ……
Explanation
String module does not replace str methods
string module இருக்கிறது என்பதால்: text.upper() text.lower() text.split() போன்ற methods unnecessary என்று அர்……
Common Mistake
Common error 1
Incorrect: import string print(string.digits……
Common Mistake
Common error 2
Incorrect: import string string.upper("python") Modern Python-ல் u……
Common Mistake
Common error 3
Confusing: string.ascii_letters with: str.isalpha() ascii_letters is a……
Common Mistake
Common error 4
Assuming: string.digits contains inte……
Common Mistake
Common error 5
Using: import String Wrong. Python module……
Common Mistake
Common error 6
Confusing: string.Template with: str.format() Both can fo……
Comparison
Comparison: template vs format vs f-string
Explanation
When to use what
For normal Python programming: f-string is commonly easiest. For template-style text w……
Important
Do not think: string module = collection of all String methods That is incorrect. Correct: str o……
Program
Complete basic program
Table
Important return values
Memory Trick
Character constants: Letters ascii_lowercase ascii_uppercase ascii_letters ……
TRB Point
TRB, NET, SET exams-க்கு முக்கியமான points: string Python Standard Library module. Import: import string stri……
Interview Point
Question
What is Python's string module? Answer: The string module is part of Python's standard library and provid……
Interview Point
Question
Difference between str and string? Answer: str is Python's built-in Str……
Interview Point
Question
What does string.ascii_letters contain? A……
Interview Point
Question
Does string.digits contain integers? Answe……
MCQ
Which statement imports Pytho……
MCQ
What does this produce? impor……
MCQ
Which constant contains upper……
MCQ
What does string.ascii_letter……
MCQ
What is: string.octdigits…
MCQ
Which provides ASCII special ……
MCQ
Which function capitalizes in……
MCQ
string.Template normally uses……
MCQ
What happens with Template.subst……
MCQ
Which method is safer when so……
Practice
Practice 1
Predict: import string print(……
Practice
Practice 2
import string print("A" in st……
Practice
Practice 3
import string print("F" in string.h……
Practice
Practice 4
import string print("9" in string.……
Practice
Practice 5
import string text = "hello pytho……
Practice
Practice 6
from string import Template t = Template……
Explanation
Complete concept map
Python String Concepts | +----------------------+ | | v v str string module | | |……
Important
இந்த one-line difference exam-க்கு……
Explanation
Example
text = "Python" text is a str……
Explanation
string is a module.…
Summary
Python string module என்பது Python Standard Library-ல் இருக்கும் String-related utility module. Import: impor……
Explanation
Short description
The Python string module is a standard library module that provides predefined ASCII character constants such……
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