How do I put a variable’s value inside a string (interpolate it into the string)?

by

Using f-strings:

plot.savefig(f'hanning{num}.pdf')

This was added in 3.6 and is the new preferred way.

Using str.format():

plot.savefig('hanning{0}.pdf'.format(num))

String concatenation:

plot.savefig('hanning' + str(num) + '.pdf')

Conversion Specifier:

plot.savefig('hanning%s.pdf' % num)

Using local variable names (neat trick):

plot.savefig('hanning%(num)s.pdf' % locals())

Using string.Template:

plot.savefig(string.Template('hanning${num}.pdf').substitute(locals()))

See also:

More Related Contents:

  1. How do I put a variable’s value inside a string?
  2. How to get the value of a variable given its name in a string? [duplicate]
  3. Simpler way to create dictionary of separate variables?
  4. How to check if type of a variable is string?
  5. How can I print variable and string on same line in Python?
  6. Convert Variable Name to String?
  7. Setting variables with exec inside a function
  8. Python: Using vars() to assign a string to a variable
  9. How do I create a multiline Python string with inline variables?
  10. find all possible combinations of letters in a string in python [duplicate]
  11. How to understand regular expression with python?
  12. Unable to use convert strings into integers for a for loop
  13. How do I print curly-brace characters in a string while using .format?
  14. Remove specific characters from a string in Python
  15. How do I execute a string containing Python code in Python?
  16. String concatenation of two pandas columns
  17. Aren’t Python strings immutable? Then why does a + ” ” + b work?
  18. How can I check if a string represents an int, without using try/except?
  19. How can you print a variable name in python? [duplicate]
  20. String to list in Python
  21. Product code looks like abcd2343, how to split by letters and numbers?
  22. case-insensitive list sorting, without lowercasing the result?
  23. converting string to tuple
  24. Add commas into number string [duplicate]
  25. Replace a string located between
  26. Check presence of vowels in a string
  27. “TypeError: a bytes-like object is required, not ‘str'” when handling file content in Python 3
  28. Does R have function startswith or endswith like python? [closed]
  29. How to Print “Pretty” String Output in Python
  30. How does str(list) work?

Leave a Comment