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Date: Sun, 12 Jul 2015 19:05:22 +0100
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Subject: Re: Why doesn't input code return 'plants' as in 'Getting Started with Beautiful Soup' text (on page 30) ?
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On 2015-07-12 18:33, Simon Evans wrote:
>
> Dear Peter Otten,
> I typed in (and did not copy and paste) the code as you suggested just now (6.28 pm, Sunday 12th July 2015), this is the result I got:
> ----------------------------------------------------------------------------
> Python 2.7.6 (default, Nov 10 2013, 19:24:18) [MSC v.1500 32 bit (Intel)] on win
> 32
> Type "help", "copyright", "credits" or "license" for more information.
>>>> from bs4 import BeautifulSoup
>>>> with open("C:\Beautiful Soup\ecologicalpyramid.html","r")as f:
> ... soup = BeautifulSoup(f,"lxml")
>    File "<stdin>", line 2
>      soup = BeautifulSoup(f,"lxml")
>         ^
> IndentationError: expected an indented block
>>>> soup = BeautifulSoup(f,"lxml")
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
> NameError: name 'f' is not defined
>>>>
> ----------------------------------------------------------------------------
> The first time I typed in the second line, I got the
> "Indentation error"
> the second time I typed in exactly the same code, I got the:
> "NameError:name 'f' is not defined"
>
Python parses the lines, and, if there are no syntax errors, it then
executes them.

That block of code (the 2 lines) contained a syntax (indentation)
error in the second line, so _none_ of the block was executed, and,
therefore, 'f' isn't defined.