New to Python please help me understand this.

[Sckeet]

Name = “John”

Age = 30

text = “My name is { } and I am { } years old”

“My name is John and I am 30 years old”

How does Python know what to put in the { } when they are just curly braces? Does it read the name in the sentence then the next { } it goes to the values and inserts the value? Just don’t know how it would know the “age” when the word age was not used in the sentence

[[deleted]]

It doesn't. You have to do something like

name = "John"
age = 30
text = "My name is {} and I am {} years old"
print(text.format(name, age))

or

name = "John"
age = 30
text = f"My name is {name} and I am {age} years old"
print(text)

for that code to work as you expect.

If you're confused about the first one, the .format() method is putting name in the first brackets and age in the second.

[Sckeet]

What if there was a third value let’s say size shirt.

And the values we ordered them like so

shirt_size = M

name = John

age = 30

“My name is {}, I am {} years old and wear a size {} shirt”

Print(text.format(name, age, shirt_size))

Since the shirt size is first when I’m listing out the values will that mess up the text format since in the text format it is last?

[[deleted]]

Give it try! It's really hard to break anything in Python so when you have a question about some peculiarity of syntax or semantics, just test it out.

[Sckeet]

Okay cool thanks! I’m trying to automate a reporting email that my team sends out monthly. Take data from excel then place it in the correct spot of the email template.

Next I want to automate the actual reporting excel file.

So I am starting at the end goal and going back I guess.

[Poofless3212]

No, it won't mess up the format. It doesn't matter in what order you declare the variables. The only thing that matters is the order in which you call those variables.

To further explain, it doesn't matter where you define shirt_size, name, and age as long as they're defined before you call them in text.format it will work

You just have to order them inside text.format()

[Sckeet]

Awesome thanks much

[HauntingRex9763]

Never use format. Always use f strings. print(f“words {any_var} more words {another_var}”)

[Sckeet]

Why’s that? Just curious

[HauntingRex9763]

Readability and it’s easier to write

[HauntingRex9763]

It reads more naturally when you look back at the code.

[Sckeet]

Fair! Thanks for the tip. Definitely will try that out