1. What are t-strings?

• T-strings are a new way to create string templates in Python.
• They allow you to define a string with placeholders that can be filled later, rather than immediately.
• This is useful for reusable strings and deferred evaluation.

Analogy:
Think of a blank invitation card:

• You design the card with placeholders like Dear {name}, you are invited to {event}.
• Later, you can fill in the names and events whenever you need.
• Previously, you had to fill in immediately, but t-strings let you define first, fill later.

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2. Syntax of template strings

t = t"Hello, {name}! Welcome to {event}."

• t before the string marks it as a template string literal.
• {placeholders} indicate where values will be inserted later.

To fill in the placeholders:

message = t.format(name="Gunjan", event="Python Workshop")
print(message)
# Output: Hello, Gunjan! Welcome to Python Workshop.

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3. Why t-strings are useful

1. Reusable templates: You can define a template once and fill in different values multiple times.

invite = t"Dear {name}, your seat for {event} is confirmed."

print(invite.format(name="Gunjan", event="Python Workshop"))
print(invite.format(name="Shubham", event="Data Science Seminar"))

2. Deferred evaluation: Sometimes, you don’t know the values when creating the string. T-strings let you define first, evaluate later.
3. Cleaner and safer formatting:

• No messy concatenation: "Hello " + name + "!"
• Avoids errors and keeps templates readable.

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4. Comparison with f-strings

Feature	f-strings	t-strings
Evaluation time	Immediate	Deferred
Reusable	Not ideal	Designed for reuse
Syntax	f"Hello {name}"	t"Hello {name}"
Best use case	Quick interpolation	Templates for repeated use or unknown values

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5. Example – Using t-strings in a real scenario

# Define a template for an email
email_template = t"""
Hello {name},

Thank you for registering for {event} on {date}.
We look forward to seeing you!

Best regards,
{organizer}
"""

# Later, fill in the values dynamically
print(email_template.format(
    name="Gunjan",
    event="Python Bootcamp",
    date="7th Oct 2025",
    organizer="edSlash Team"
))

Output:

Hello Gunjan,

Thank you for registering for Python Bootcamp on 7th Oct 2025.
We look forward to seeing you!

Best regards,
edSlash Team

• Notice how the template is defined once and can be reused with different values.

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Summary

• t-strings are Python 3.14’s template string literals.
• They allow you to create reusable string templates and fill in placeholders later.
• Ideal for emails, reports, notifications, and other repeated formatted text.
• They make code cleaner, safer, and more maintainable.

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Article written by Harshil Bansal, Team edSlash.