FAQ: Learn Python – Strings & Console Output – str()

Frequently Asked Questions Python FAQ
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This community-built FAQ covers the “str()” exercise in Codecademy’s lessons on Python.

FAQs for the Codecademy exercise str():

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Hi there. What’s the difference for the positioning of the string syntaxes?

e.g.

parrot = “Norwegian Blue”

print parrot.len()
print parrot.upper()
print str(parrot)

I noticed that for the other string syntax, they’re placed after the variable. While for some variables, they’re placed inside the string syntax.

4

I may be going too far ahead, but this surprised me a bit.

Why does this work

  pi = 3.14
    print pi
    print str(pi)

returning 3.14 for both print instructions (as expected),

but this

  pi = "3.14"
    print pi
    print int(pi)

returns the error “ValueError: invalid literal for int() with base 10: ‘3.14’”?

If the second print command is modified to

print(int(float(pi))

then it returns no error and prints 3.14 and 3 as expected.

Can’t Python produce an integer directly from a string that contains a float?

1 Like
5

I was wondering the same thing.

6

hi , can you explain to me please why when we wrote print str(pi) we didnt have quotes on 3.14 ?

1 Like
7

print (or print() in Python 3) sends text to the console without quotes (unless, of course, you purposely escape the quotes). That means that you cannot tell just by looking at the screen if a certain function returned a string or a number.

If you want to see the quotes, use repr()

pi = 3.14
print pi
print str(pi)
print repr(pi)
print repr(str(pi))

# Output:
3.14
3.14
3.14
'3.14'
2 Likes
8

Hey there!
May i knw how do i knw when i should use “” in a variable. And when I don’t have to use?

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even if I do the print pi instead of adding str. The output is still the same. May the know the difference?