String interpolation inserts variables or expressions into a string template to produce formatted textual output. In Python, f-strings provide the clearest approach: prefix the string with f and place values inside curly braces. section 2.1 section 2.1.2
Create task output
name = "Homework" urgency = 5 task = f"Name: {name}; Urgency Level: {urgency}" print(task) # Name: Homework; Urgency Level: 5 section 2.1 section 2.1.2
F-strings automatically interpolate values such as strings and integers, and they also support lists, tuples, dictionaries, and custom class instances. This avoids manual conversion and makes formatted output easier to read. section 2.1 section 2.1.2
Choose interpolation patterns with maintainability in mind:
- Prefer f-strings over concatenation, the percent operator, and the str.format method for ordinary formatted output. section 2.1 section 2.1.1
- Escape literal curly braces by doubling them: {{ produces { and }} produces }. section 2.1.6
# existing variables name = "Homework" urgency = 5 # desired output: Name: Homework; Urgency Level: 5
Use the listing to see the input variables and the target textual output before writing the interpolation expression. section 2.1
