diff --git a/Doc/tutorial/introduction.rst b/Doc/tutorial/introduction.rst index ebc2e9187534b4..f19c37201e4dc1 100644 --- a/Doc/tutorial/introduction.rst +++ b/Doc/tutorial/introduction.rst @@ -138,16 +138,25 @@ and uses the ``j`` or ``J`` suffix to indicate the imaginary part .. _tut-strings: -Strings -------- +Text +---- -Besides numbers, Python can also manipulate strings, which can be expressed -in several ways. They can be enclosed in single quotes (``'...'``) or -double quotes (``"..."``) with the same result [#]_. ``\`` can be used -to escape quotes:: +Python can manipulate text (represented by type :class:`str`, so-called +"strings") as well as numbers. This includes characters "``!``", words +"``rabbit``", names "``Paris``", sentences "``Got your back.``", etc. +"``Yay! :)``". They can be enclosed in single quotes (``'...'``) or double +quotes (``"..."``) with the same result [#]_. >>> 'spam eggs' # single quotes 'spam eggs' + >>> "Paris rabbit got your back :)! Yay!" # double quotes + 'Paris rabbit got your back :)! Yay!' + >>> '1975' # digits and numerals enclosed in quotes are also strings + '1975' + +To quote a quote, we need to "escape" it, by preceding it with ``\``. +Alternatively, we can use the other type of quotation marks:: + >>> 'doesn\'t' # use \' to escape the single quote... "doesn't" >>> "doesn't" # ...or use double quotes instead @@ -159,23 +168,14 @@ to escape quotes:: >>> '"Isn\'t," they said.' '"Isn\'t," they said.' -In the interactive interpreter, the output string is enclosed in quotes and -special characters are escaped with backslashes. While this might sometimes -look different from the input (the enclosing quotes could change), the two -strings are equivalent. The string is enclosed in double quotes if -the string contains a single quote and no double quotes, otherwise it is -enclosed in single quotes. The :func:`print` function produces a more -readable output, by omitting the enclosing quotes and by printing escaped -and special characters:: +In the Python shell, the string definition and output string can look +different. The :func:`print` function produces a more readable output, by +omitting the enclosing quotes and by printing escaped and special characters:: - >>> '"Isn\'t," they said.' - '"Isn\'t," they said.' - >>> print('"Isn\'t," they said.') - "Isn't," they said. >>> s = 'First line.\nSecond line.' # \n means newline - >>> s # without print(), \n is included in the output + >>> s # without print(), special characters are included in the string 'First line.\nSecond line.' - >>> print(s) # with print(), \n produces a new line + >>> print(s) # with print(), special characters are interpreted, so \n produces new line First line. Second line. pFad - Phonifier reborn

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