Functions
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Last updated 7:26 PM on 11/24/22
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22 Terms
1
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scope
The _______ of a variable refers to the regions of the program where
that variable is valid, and can be accessed
that variable is valid, and can be accessed
2
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a local variable
the variable that is not shared between functions
3
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a global variable
a _______ variable is a variable defined throughout the program – anything in
the main code
the main code
4
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5
5
5
5
5
def my_function():
print(a)
a = 5
print(a)
my_function()
print(a)
print(a)
a = 5
print(a)
my_function()
print(a)
5
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5
6
5
6
5
def my_function(x):
x += 1
print(x)
a = 5
print(a)
my_function(a)
print(a)
x += 1
print(x)
a = 5
print(a)
my_function(a)
print(a)
6
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5
def F(a):
a += 3
a = 5
F(a)
print(a)
a += 3
a = 5
F(a)
print(a)
7
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UnboundLocalError
def F():
a += 3
a = 5
F()
print(a)
a += 3
a = 5
F()
print(a)
8
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10
def F(a):
print(a)
a = 5
b = 10
F(b)
print(a)
a = 5
b = 10
F(b)
9
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8
def F():
global a
a += 3
a = 5
F()
print(a)
global a
a += 3
a = 5
F()
print(a)
10
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multiple, but if more than one it needs to be in a tuple.
otherwise, it needs to be a single "thing"
otherwise, it needs to be a single "thing"
how many values can a function return?
11
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the function immediately ends
after a value has been returned in a function.....
12
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21
def twenty_one():
return 21
a = twenty_one()
print(a)
return 21
a = twenty_one()
print(a)
13
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True
False
False
def is_three_more(a, b):
if a == b + 3:
return True
else:
return False
print(is_three_more(10, 7))
print(is_three_more(1, 5))
if a == b + 3:
return True
else:
return False
print(is_three_more(10, 7))
print(is_three_more(1, 5))
14
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5
def F(a):
a += 1
return a
a += 10
return a
x = F(4)
print(x)
a += 1
return a
a += 10
return a
x = F(4)
print(x)
15
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Toronto Ontario Canada
Orlando Florida USA
Houston Texas USA
Bryan Texas USA
Orlando Florida USA
Houston Texas USA
Bryan Texas USA
def F(a="Bryan", b="Texas", c="USA"):
print(a, b, c)
F("Toronto", "Ontario", "Canada")
F("Orlando", "Florida")
F("Houston")
F()
print(a, b, c)
F("Toronto", "Ontario", "Canada")
F("Orlando", "Florida")
F("Houston")
F()
16
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TypeError: F() missing 1 required positional
argument: 'a'
"Parameters without a default value
must be specified"
argument: 'a'
"Parameters without a default value
must be specified"
def F(a, b="Texas", c="USA"):
print(a, b, c)
F()
print(a, b, c)
F()
17
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1
2
2
def dosomething(a, b):
a += b
b = 7
x = 1
y = 2
dosomething(x, y)
print(x)
print(y)
a += b
b = 7
x = 1
y = 2
dosomething(x, y)
print(x)
print(y)
18
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1.0
2.0
2.0
def dosomething(a, b):
a += b
b = 7
x = 1.0
y = 2.0
dosomething(x, y)
print(x)
print(y)
a += b
b = 7
x = 1.0
y = 2.0
dosomething(x, y)
print(x)
print(y)
19
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Texas
Aggies
Aggies
def dosomething(a, b):
a += b
b = 7
x = "Texas"
y = "Aggies"
dosomething(x, y)
print(x)
print(y)
a += b
b = 7
x = "Texas"
y = "Aggies"
dosomething(x, y)
print(x)
print(y)
20
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[1, 2]
[2]
[2]
def dosomething(a, b):
a += b
b = 7
x = [1]
y = [2]
dosomething(x, y)
print(x)
print(y)
a += b
b = 7
x = [1]
y = [2]
dosomething(x, y)
print(x)
print(y)
21
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[1, 2, 3]
def dosomething(a):
a = [10, 11, 12]
x = [1, 2, 3]
dosomething(x)
print(x)
a = [10, 11, 12]
x = [1, 2, 3]
dosomething(x)
print(x)
22
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[10, 2, 3]
def dosomething(a):
a[0] = 10
x = [1, 2, 3]
dosomething(x)
print(x)
a[0] = 10
x = [1, 2, 3]
dosomething(x)
print(x)