Merge pull request #355 from realpython/python-repl

Sample code for the REPL article

Author: KateFinegan

python-repl/README.md

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+# The Python Standard REPL: Try Out Code and Ideas Quickly
+
+This folder provides the code examples for the Real Python tutorial [The Python Standard REPL: Try Out Code and Ideas Quickly](https://realpython.com/python-repl/).

python-repl/calculations.py

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+def add(a, b):
+    return a + b
+
+
+def sub(a, b):
+    return a - b

python-repl/greeting.py

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+def greet(name="World"):
+    print(f"Hello, {name}!")
+
+
+name = input("What is your name? ")
+
+greet(name)

python-repl/greeting_upper.py

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+def greet(name="World", upper=False):
+    greeting = f"Hello, {name}!"
+    if upper:
+        greeting = greeting.upper()
+    print(greeting)

python-repl/sample.py

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+def read_data():
+    # Read data from a file or database...
+    return [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+
+
+sample = read_data()
+
+
+def mean(data):
+    return sum(data) / len(data)
+
+
+average = mean(sample)