Merge branch 'master' into python-string-formatting-update

Author: brendaweles

python-string-interpolation/README.md

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+# String Interpolation in Python: Exploring Available Tools
+
+This folder provides the code examples for the Real Python tutorial [String Interpolation in Python: Exploring Available Tools](https://realpython.com/python-string-interpolation/).

python-string-interpolation/article.py

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+class Article:
+    def __init__(self, title, author, pub_date):
+        self.title = title
+        self.author = author
+        self.pub_date = pub_date
+
+    def __str__(self):
+        return (
+            f"Article: {self.title}\n"
+            f"Author: {self.author}\n"
+            f"Published: {self.pub_date}\n"
+        )
+
+    def __repr__(self):
+        return (
+            f"{type(self).__name__}("
+            f"title={self.title}, "
+            f"author={self.author}, "
+            f"pub_date={self.pub_date})"
+        )
+
+
+if __name__ == "__main__":
+    article = Article(
+        title="String Interpolation in Python: Exploring Available Tools",
+        author="Real Python",
+        pub_date="2024-05-15",
+    )
+
+    print(f"{article!s}")
+    print(f"{article!r}")

python-string-interpolation/concatenation.py

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+name = "Pythonista"
+day = "Friday"  # Of course 😃
+
+print("Hello, " + name + "! Today is " + day + ".")

python-string-interpolation/emails.py

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+import csv
+
+template = """
+Dear {customer},
+
+Thank you for your recent purchase of {product}.
+
+Remember, our support team is always here to assist you.
+
+Best regards,
+{employee}
+"""
+
+
+def display_emails(template, data_file):
+    with open(data_file) as file:
+        for customer in csv.DictReader(file):
+            print(template.format(**customer))
+
+
+display_emails(template, "sales.csv")

python-string-interpolation/f_strings.py

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+import math
+
+name = "Pythonista"
+day = "Friday"  # Of course 😃
+print(f"Hello, {name}! Today is {day}.")
+
+x = 5
+y = 10
+print(f"The sum of {x} and {y} is {x + y}.")
+
+
+radius = 16
+print(f"The area of your circle is {math.pi * radius ** 2}")
+
+name = "Pythonista"
+site = "real python"
+print(f"Hello, {name.upper()}! Welcome to {site.title()}!")
+print(f"{[2**n for n in range(3, 9)]}")
+
+print(f"The number is {42}")
+print(f"Pi {3.14}")
+
+value = "Suspicious value"
+print(f"{value = }")
+print(f"{2 + 3 = }")
+
+numbers = {"one": 1, "two": 2, "three": 3}
+print(f"{numbers['one']}-{numbers['two']}-{numbers['three']}")

python-string-interpolation/format_method.py

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+name = "Pythonista"
+day = "Friday"  # Of course 😃
+
+print("Hello, {}! Today is {}.".format(name, day))
+
+
+numbers = {"one": 1, "two": 2, "three": 3}
+print("{one}-{two}-{three}".format(**numbers))
+print("{one}-{two}".format(**numbers))

python-string-interpolation/modulo_operator.py

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+name = "Pythonista"
+day = "Friday"  # Of course 😃
+
+print("Hello, %s! Today is %s." % (name, day))
+
+x = 5
+y = 10
+print("The sum of %s and %s is %s." % (x, y, x + y))
+
+template = "The sum of %s and %s is %s."
+print(template % (x, y, x + y))
+
+print("Hello, %s!" % "Pythonista")
+print("Hello, %s!" % ("Pythonista",))
+
+# print("Interpolating a tuple: %s" % (1, 2, 3))
+print("Interpolating a tuple: %s" % ((1, 2, 3),))
+
+jane = {"name": "Jane", "job": "Python Dev"}
+print("My name is %(name)s. I'm a %(job)s." % jane)

python-string-interpolation/sales.csv

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+product,customer,employee
+MacBook Pro 16-inch,Emily,John
+Samsung Galaxy S22,Linda,Jane
+Canon EOS R5,Bob,Kate

python-string-interpolation/template_strings.py

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+from string import Template
+
+template = Template("Hello, $name! Today is $day.")
+print(template.substitute(name="John", day="Friday"))
+
+print(Template("$$$amount").substitute(amount="1,000.00"))
+print(Template("$greeting, $who!").substitute(greeting="Hello", who="World"))
+
+print(Template("${amount}USD").substitute(amount="100"))
+print(Template("$amountUSD").substitute(amount="100"))
+
+greeting = Template("Hello, $name! Today is $day.")
+print(greeting.substitute(name="John", day="Friday"))
+greeting.template = "Hello, $name! Welcome!"
+print(greeting.substitute(name="John"))
+
+numbers = {"one": 1, "two": 2, "three": 3}
+print(Template("$one-$two-$three").substitute(**numbers))