Remove trailing whitespace.
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index ca6de17..95497b4 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -159,7 +159,7 @@
List comprehensions provide a concise way to create lists from sequences.
Common applications are to make lists where each element is the result of
-some operations applied to each member of the sequence, or to create a
+some operations applied to each member of the sequence, or to create a
subsequence of those elements that satisfy a certain condition.
@@ -167,7 +167,7 @@
clause, then zero or more :keyword:`for` or :keyword:`if` clauses. The result
will be a list resulting from evaluating the expression in the context of the
:keyword:`for` and :keyword:`if` clauses which follow it. If the expression
-would evaluate to a tuple, it must be parenthesized.
+would evaluate to a tuple, it must be parenthesized.
Here we take a list of numbers and return a list of three times each number::
@@ -227,7 +227,7 @@
powerful tool but -- like all powerful tools -- they need to be used carefully,
if at all.
-Consider the following example of a 3x3 matrix held as a list containing three
+Consider the following example of a 3x3 matrix held as a list containing three
lists, one list per row::
>>> mat = [
@@ -236,7 +236,7 @@
... [7, 8, 9],
... ]
-Now, if you wanted to swap rows and columns, you could use a list
+Now, if you wanted to swap rows and columns, you could use a list
comprehension::
>>> print([[row[i] for row in mat] for i in [0, 1, 2]])
@@ -254,7 +254,7 @@
print(row[i], end="")
print()
-In real world, you should prefer builtin functions to complex flow statements.
+In real world, you should prefer builtin functions to complex flow statements.
The :func:`zip` function would do a great job for this use case::
>>> list(zip(*mat))