To print Python print(f-string), you need to enclose each of the variable names inside a set of curly braces.
f"This is an f-string {var_name} and {var_name}."Python print(f-string)
Simple example code Print Variables using Python f-Strings. Just specify the names of the variables inside a set of curly braces {}. All variable names will be replaced with their respective values.
name = "John"
age = 32
print(f"I'm {name} age {age}.")Output:
Below is a table detailing the usage of f-strings (formatted string literals) in Python.
| Feature | Description | Example |
|---|---|---|
| Basic Usage | Embed expressions inside string literals, using curly braces {} | name = "Alice" <br> print(f"Hello, {name}!") <br> Output: Hello, Alice! |
| Variables | Directly insert variables | age = 30 <br> print(f"Age: {age}") <br> Output: Age: 30 |
| Expressions | Evaluate expressions within the braces | a = 5; b = 10 <br> print(f"Sum: {a + b}") <br> Output: Sum: 15 |
| Calling Functions | Call functions inside the braces | def greet(): return "Hello" <br> print(f"{greet()}, World!") <br> Output: Hello, World! |
| Formatting Numbers | Format numbers for better readability | value = 1234.5678 <br> print(f"Formatted: {value:.2f}") <br> Output: Formatted: 1234.57 |
| Padding and Alignment | Align text with spaces or specific characters | text = "Hi" <br> print(f"{text:<10}") <br> Output: Hi |
| Multiline f-strings | Spread f-strings across multiple lines with triple quotes | name = "Alice"; age = 30 <br> print(f"""Name: {name} Age: {age}""") <br> Output: Name: Alice Age: 30 |
| Braces within f-strings | Use double braces {{ and }} to include literal braces in the output | print(f"{{}}") <br> Output: {} |
| Nested f-strings | Use f-strings within other f-strings | level = 5 <br> print(f"Level: {f'{level}'}") <br> Output: Level: 5 |
| Using Dictionaries | Access dictionary values within f-strings | data = {"key": "value"} <br> print(f"Key: {data['key']}") <br> Output: Key: value |
| Conditional Expressions | Include conditional expressions directly | status = True <br> print(f"Status: {'Active' if status else 'Inactive'}") <br> Output: Status: Active |
| Importing Modules | Use functions from imported modules | import math <br> print(f"Pi: {math.pi:.2f}") <br> Output: Pi: 3.14 |
| Accessing Object Attributes | Access object attributes within f-strings | class Person: <br> def __init__(self, name): self.name = name <br> p = Person("Alice") <br> print(f"Name: {p.name}") <br> Output: Name: Alice |
| Date Formatting | Format dates within f-strings | from datetime import datetime <br> now = datetime.now() <br> print(f"Date: {now:%Y-%m-%d}") <br> Output: Date: 2024-06-11 |
| Escape Sequences | Use backslashes for escape sequences within f-strings | print(f"Newline: \\n Tab: \\t") <br> Output: Newline: \n Tab: \t |
Do comment if you have any doubts or suggestions on this Python string formatting topic.
Note: IDE: PyCharm 2021.3.3 (Community Edition)
Windows 10
Python 3.10.1
All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.