Python wrap string in double quotes

If my input text is

a
b
c
d
e
f
g

and I want my output text to be: [with the double quotes]

"a b c d e f g"

Where do I go after this step:

" ".join[[a.strip[] for a in b.split["\n"] if a]]

asked Jul 22, 2016 at 21:46

1

You have successfully constructed a string without the quotes. So you need to add the double quotes. There are a few different ways to do this in Python:

>>> my_str = " ".join[[a.strip[] for a in b.split["\n"] if a]]
>>> print '"' + my_str + '"'     # Use single quotes to surround the double quotes
"a b c d e f g"
>>> print "\"" + my_str + "\""   # Escape the double quotes
"a b c d e f g"
>>> print '"%s"' % my_str        # Use old-style string formatting
"a b c d e f g"
>>> print '"{}"'.format[my_str]  # Use the newer format method
"a b c d e f g"

Or in Python 3.6+:

>>> print[f'"{my_str}"']         # Use an f-string
"a b c d e f g"  

Any of these options are valid and idiomatic Python. I might go with the first option myself, or the last in Python 3, simply because they're the shortest and clearest.

Quoth

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answered Jul 22, 2016 at 21:58

JamesJames

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'"%s"' % " ".join[[a.strip[] for a in s.split["\n"] if a]]

answered Jul 22, 2016 at 21:51

CentAuCentAu

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Add quotes to a string in Python #

To add quotes to a string in Python:

1. Alternate between single and double quotes.
2. For example, to add double quotes to a string, wrap the string in single quotes.
3. To add single quotes to a string, wrap the string in double quotes.

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# 👇️ alternating single and double quotes
result_1 = '"apple"'

# 👇️ using a formatted string literal
my_str = 'apple'
result_2 = f'"{my_str}"'

# 👇️ escaping double quotes with a backslash
result_3 = "\"apple\""

The first example in the code snippet alternates between single and double quotes.

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result_1 = '"apple"'

If a string is wrapped in single quotes, we can use double quotes in the string without any issues.

However, if we try to use single quotes in a string that was wrapped in single quotes, we end up terminating the string prematurely.

If you need to add single quotes to a string, wrap the string in double quotes.

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result_1 = "one 'two' three"

In some rare cases your string might contain both single and double quotes. To get around this, use a triple-quoted string.

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result_1 = """ "one" two 'three' """

Triple-quotes strings are very similar to basic strings that we declare using single or double quotes.

But they also enable us to:

• use single and double quotes in the same string without escaping
• define a multi-line string without adding newline characters

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example = '''
  It's Alice
  "hello"
'''

#
# It's Alice
# "hello"
#
print[example]

The string in the example above uses both single and double quotes and doesn't have to escape anything.

End of lines are automatically included in triple-quoted strings, so we don't have to add a newline character at the end.

An alternative is to use a formatted string literal.

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my_str = 'one'
result_2 = f'"{my_str}" "two"'

print[result_2]  # 👉️ '"one" "two"'

Notice that we still have to alternate between single and double quotes.

Formatted string literals [f-strings] let us include expressions inside of a string by prefixing the string with f.

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my_str = 'is subscribed:'

my_bool = True

result = f'{my_str} "{my_bool}"'

print[result]  # 👉️ 'is subscribed: "True"'

Make sure to wrap expressions in curly braces - {expression}.

You can also use a backslash \ to escape quotes.

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result_3 = "\"one\" \"two\""

print[result_3]  # 👉️ '"one" "two"'

In most cases, it is preferable [and more readable] to alternate between single and double quotes, but escaping quotes can also be useful [e.g. in rare cases in a JSON string].

How do you wrap a string with double quotes in Python?

How do you get a string between quotes in Python?

How do you double quote a string?

How can I add double quotes to a string that is inside a variable?