11_args.py

# Experiment with positional arguments, arbitrary arguments, and keyword
# arguments.

# Write a function f1 that takes two integer positional arguments and returns
# the sum. This is what you'd consider to be a regular, normal function.

def f1(arg1, arg2):
    return 1 + 2

print(f1(1, 2))

# Write a function f2 that takes any number of integer arguments and returns the
# sum.
# Note: Google for "python arbitrary arguments" and look for "*args"

def f2(*arg):
    result = 0
    for args in arg:
        result = result + args
    return result

print(f2(1))                    # Should print 1
print(f2(1, 3))                 # Should print 4
print(f2(1, 4, -12))            # Should print -7
print(f2(7, 9, 1, 3, 4, 9, 0))  # Should print 33

a = [7, 6, 5, 4]

# How do you have to modify the f2 call below to make this work?
#print(f2(a))    # Should print 22

# Write a function f3 that accepts either one or two arguments. If one argument,
# it returns that value plus 1. If two arguments, it returns the sum of the
# arguments.
# Note: Google "python default arguments" for a hint.

def f3(arg1, arg2=1):
    return arg1 + arg2


print(f3(1, 2))  # Should print 3
print(f3(8))     # Should print 9


# Write a function f4 that accepts an arbitrary number of keyword arguments and
# prints out the keys and values like so:
#
# key: foo, value: bar
# key: baz, value: 12
#
# Note: Google "python keyword arguments".

def f4(a, b="Null"):

    return "key: \"a\", value: \"b\""



# Should print
# key: a, value: 12
# key: b, value: 30
print(f4(a=12, b=30))

# Should print
# key: city, value: Berkeley
# key: population, value: 121240
# key: founded, value: "March 23, 1868"
#print(f4(city="Berkeley", population=121240, founded="March 23, 1868"))

d = {
    "monster": "goblin",
    "hp": 3
}

# How do you have to modify the f4 call below to make this work?
f4(d)