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SectionΒ 1. ChapterΒ 1
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def hello(name):
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greet("World");

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def greet(name): print(f"Hello, {name}!") if __name__ == "__main__": greet("World")
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def greet(name):
    print(f"Hello, {name}!")

if __name__ == "__main__":
    greet("World")

First, let's see how we can use variables to calculate the total cost of items. This example multiplies the price per unit by the quantity to determine how much it would cost to buy a certain number of items:

Note
Note

You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements.

Note
Definition

You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements.

Note
Study More

You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements.

Title 1111111
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You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements.

Title 222222
expand arrow

You can't use a variable before assigning a value to it. If you try to access a

Title 333333
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You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements. You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements. You can't use a variable before assigning a value to it. If you try to access a variable that hasn't been assigned, Python will raise a NameError. Always make sure to assign a value to your variable before you use it in calculations or print statements.

ID

Name

Surname

Age

jdnvjudfdfv

236

1

John

Dou

22

dfvdkfbs

kfjvbdhjvhfdbjkvnhvfdv

2

AAA

jjdhhhduvf fgd

445

jdsdvjndfjvkdfnvkjdfnkvd

dfvgb

Task

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Complete and output the arithmetic operations below

  • Multiply the price of peanut butter (7.32) and the tax rate (0.2) to calculate the tax value. Use * operator
  • Divide price of eggs (8.30) and the number of eggs (20) to calculate the price of single egg. Use / operator

Solution

12
while True: print("This runs forever")
copy
aaa.py

aaa.py

bbb.py

bbb.py

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dfnvnhfvfnvfjnjdkjfvnjdcjjj

hvgy
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SectionΒ 1. ChapterΒ 1
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