8
For example, in PHP, we can do so:
$preco = 200;
$unidades = 10;
$texto_final = "O produto custa {$preco} reais e restam {$unidades} unidades.";
You can do something similar in Python or you must always concatenate?
2 answers
7
For versions prior to 3.6, always use the method str.format and I explain why in this question:
Already, from version 3.6, a new way to perform the interpolation has been added: the f-strings (PEP 498). They are strings defined with the prefix f and may contain expressions between keys that will be parsed at runtime.
preco = 200
unidades = 10
print(f"O produto custa {preco} reais e restam {unidades} unidades.")
See working on Repl.it
It is also permitted to use the training rules which the method str.format possesses, such as:
pi = 3.14159
print(f'O valor de pi é {pi: >10.3}')
See working on Repl.it
6
You can do it like this:
preco = 200
unidades = 10
texto_final = "O produto custa R$ %.2f reais e restam %s unidades." % (preco, unidades)
print(texto_final)
# Outros exemplos
nome = 'Thon';
sobre = 'de Souza';
print("%s %s" % (nome, sobre))
print("{} {}".format(nome, sobre))
print("{nome} {sobre}".format(nome="João", sobre="da Silva"))
print("{sobre} {nome}".format(nome="João", sobre="da Silva"))
preco = 162.58
print("R$ %.1f" % (preco))
print("R$ %.2f" % (preco))
print("R$ %.3f" % (preco))
- %s - String (or any object with a string representation such as numbers)
- %d - Whole
- %f - Floating point numbers
- %.<digit number>f - Floating point numbers with a fixed number of digits to the right of the point.
- %x/%X - Integers in hexadecimal representation (lower case / upper case)
See working on repl it.
References
Browser other questions tagged python python-3.x string-interpolation
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