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[3.9] Doc: Do not suggest s[::-1] for reversed order (GH-22457) #22849

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Merged
miss-islington merged 1 commit into from
Oct 21, 2020
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[3.9] Doc: Do not suggest s[::-1] for reversed order (GH-22457) #22849

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7 changes: 1 addition & 6 deletions Doc/faq/programming.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1116,19 +1116,14 @@ trailing newline from a string.
How do I iterate over a sequence in reverse order?
--------------------------------------------------

Use the :func:`reversed` built-in function, which is new in Python 2.4::
Use the :func:`reversed` built-in function::

for x in reversed(sequence):
... # do something with x ...

This won't touch your original sequence, but build a new copy with reversed
order to iterate over.

With Python 2.3, you can use an extended slice syntax::

for x in sequence[::-1]:
... # do something with x ...


How do you remove duplicates from a list?
-----------------------------------------
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1 change: 0 additions & 1 deletion Doc/tools/susp-ignored.csv
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Expand Up @@ -12,7 +12,6 @@ extending/extending,,:myfunction,"PyArg_ParseTuple(args, ""D:myfunction"", &c);"
extending/extending,,:set,"if (PyArg_ParseTuple(args, ""O:set_callback"", &temp)) {"
extending/newtypes,,:call,"if (!PyArg_ParseTuple(args, ""sss:call"", &arg1, &arg2, &arg3)) {"
faq/programming,,:chr,">=4.0) or 1+f(xc,yc,x*x-y*y+xc,2.0*x*y+yc,k-1,f):f(xc,yc,x,y,k,f):chr("
faq/programming,,::,for x in sequence[::-1]:
faq/programming,,:reduce,"print((lambda Ru,Ro,Iu,Io,IM,Sx,Sy:reduce(lambda x,y:x+y,map(lambda y,"
faq/programming,,:reduce,"Sx=Sx,Sy=Sy:reduce(lambda x,y:x+y,map(lambda x,xc=Ru,yc=yc,Ru=Ru,Ro=Ro,"
faq/windows,,:d48eceb,"Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:04:45) [MSC v.1900 32 bit (Intel)] on win32"
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