Python Strings
1. What is a String?
A string is text.
In Python, any text written inside:
-
" "(double quotes) or -
' '(single quotes)
is called a string.
Example
2. Printing a String
Example
Print a String Variable
3. String Length
You can find how many characters are in a string using len().
Example
Output:
4. Accessing Characters (Indexing)
Each character in a string has a position (index).
Index starts from 0.
Example
5. Slicing Strings
Slicing means taking a part of the string.
Example
6. Joining Strings (Concatenation)
You can join strings using +.
Example
7. String with Numbers
Strings and numbers cannot be joined directly.
❌ Wrong Example
✔ Correct Example
OR (easy way)
8. Common String Methods
Python has many built-in string functions.
Uppercase
Lowercase
Capitalize First Letter
Replace Text
9. Checking Text in a String
Example
10. Taking String Input from User
Example
11. Multiline Strings
You can write text in many lines using triple quotes.
Example
12. Common Beginner Mistakes
❌ Missing Quotes
✔ Correct:
❌ Wrong Index
❌ Error: index out of range
13. Simple Practice Examples
Example 1: Print Full Name
Example 2: Count Letters
Example 3: Change Case
14. Summary (Python Strings)
✔ Strings are text
✔ Written inside quotes
✔ len() gives length
✔ Index starts from 0
✔ Many useful string methods
📘 Perfect for Beginner eBook
This chapter is ideal for:
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Python beginner books
-
School & college students
-
Self-learners
If you want next, I can write:
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String Exercises
-
Python Booleans
-
Operators
-
if–else using strings
-
MCQs with answers
Just tell me 😊
