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Diffstat (limited to 'Doc/tutorial/introduction.rst')
| -rw-r--r-- | Doc/tutorial/introduction.rst | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/Doc/tutorial/introduction.rst b/Doc/tutorial/introduction.rst index 57254db..10166a6 100644 --- a/Doc/tutorial/introduction.rst +++ b/Doc/tutorial/introduction.rst @@ -58,7 +58,7 @@ operators ``+``, ``-``, ``*`` and ``/`` work just like in most other languages >>> 8/5 # Fractions aren't lost when dividing integers 1.6000000000000001 -Note: You might not see exactly the same result; floating point results can +Note: You might not see exactly the same result; floating point results can differ from one machine to another. We will say more later about controlling the appearance of floating point output; what we see here is the most informative display but not as easy to read as we would get with:: @@ -71,9 +71,9 @@ unless we are specifically discussing output formatting, and explain later why these two ways of displaying floating point data come to be different. See :ref:`tut-fp-issues` for a full discussion. -To do integer division and get an integer result, +To do integer division and get an integer result, discarding any fractional result, there is another operator, ``//``:: - + >>> # Integer division returns the floor: ... 7//3 2 @@ -103,7 +103,7 @@ error will occur:: >>> # try to access an undefined variable ... n - Traceback (most recent call last): + Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'n' is not defined @@ -245,14 +245,14 @@ Or, strings can be surrounded in a pair of matching triple-quotes: ``"""`` or they will be included in the string. :: print(""" - Usage: thingy [OPTIONS] + Usage: thingy [OPTIONS] -h Display this usage message -H hostname Hostname to connect to """) produces the following output:: - Usage: thingy [OPTIONS] + Usage: thingy [OPTIONS] -h Display this usage message -H hostname Hostname to connect to @@ -371,10 +371,10 @@ One way to remember how slices work is to think of the indices as pointing Then the right edge of the last character of a string of *n* characters has index *n*, for example:: - +---+---+---+---+---+ + +---+---+---+---+---+ | H | e | l | p | A | - +---+---+---+---+---+ - 0 1 2 3 4 5 + +---+---+---+---+---+ + 0 1 2 3 4 5 -5 -4 -3 -2 -1 The first row of numbers gives the position of the indices 0...5 in the string; @@ -396,7 +396,7 @@ The built-in function :func:`len` returns the length of a string:: .. seealso:: :ref:`typesseq` - Strings are examples of *sequence types*, and support the common + Strings are examples of *sequence types*, and support the common operations supported by such types. :ref:`string-methods` @@ -565,7 +565,7 @@ series as follows:: >>> while b < 10: ... print(b) ... a, b = b, a+b - ... + ... 1 1 2 @@ -601,8 +601,8 @@ This example introduces several new features. * The :func:`print` function writes the value of the expression(s) it is given. It differs from just writing the expression you want to write (as we did - earlier in the calculator examples) in the way it handles multiple - expressions, floating point quantities, + earlier in the calculator examples) in the way it handles multiple + expressions, floating point quantities, and strings. Strings are printed without quotes, and a space is inserted between items, so you can format things nicely, like this:: @@ -617,5 +617,5 @@ This example introduces several new features. >>> while b < 1000: ... print(b, end=' ') ... a, b = b, a+b - ... + ... 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 |