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committed 1063481

Clarify the table entries for combinatorics.

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# File Doc/library/itertools.rst

• Ignore whitespace
` `
` **Combinatoric generators:**`
` `
`-    =====================================   ====================       =================================================`
`-    Iterator                                Arguments                  Results`
`-    =====================================   ====================       =================================================`
`-    :func:`product`                         p, q, ... [repeat=1]       cartesian product`
`-    :func:`permutations`                    p[, r]                     r-length permutations (without repeated elements)`
`-    :func:`combinations`                    p[, r]                     r-length combinations (sorted and no repeats)`
`-    =====================================   ====================       =================================================`
`+    ==============================================   ====================       =============================================================`
`+    Iterator                                         Arguments                  Results`
`+    ==============================================   ====================       =============================================================`
`+    :func:`product`                                  p, q, ... [repeat=1]       cartesian product, equivalent to a nested for-loop`
`+    :func:`permutations`                             p[, r]                     r-length tuples, all possible orderings, no repeated elements`
`+    :func:`combinations`                             p[, r]                     r-length tuples, in sorted order, no repeated elements`
`+    |`
`+    ``product('ABCD', repeat=2)``                                               ``AA AB AC AD BA BB BC BD CA CB CC CD DA DB DC DD```
`+    ``permutations('ABCD', 2)``                                                 ``AB AC AD BA BC BD CA CB CD DA DB DC```
`+    ``combinations('ABCD', 2)``                                                 ``AB AC AD BC BD CD```
`+    ==============================================   ====================       =============================================================`
` `
` `
` .. _itertools-functions:`