How Can I Create Formatted Strings with Delimiters in Python?

Format Strings in Python

Achieving a formatted string with a delimiter can be challenging. This guide presents an updated solution using Python 2.6 to address this issue.

Format Strings

Modern Python versions deprecate % formatting. Instead, opt for Python's format string feature:

"[{0}, {1}, {2}]".format(1, 2, 3)

Usage

The placeholder syntax {i} takes the form of this string:

• {i}: Positional argument
• {i:s}: Format argument with type

In the basic format, the {i} placeholder represents the positional value 0-indexed, as illustrated in this example:

"[value {0}, {1}, {2}]".format(a, b, c)
[value a, b, c]

Advanced Features

Format strings offer additional functionalities. For instance, you can specify the alignment, field width, and decimal precision:

"{0:7.2f}".format(3.14159)
'    3.14'

Conclusion

Python's format strings provide a powerful and flexible method for creating formatted strings. Embrace this modern technique to future-proof your code.

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