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IndentationError: expected an indented block but it's there

0 votes
79 views

Having a problem getting a py script to execute. Got this error:

File "/scripts/blockIPv4.py", line 19
 ip = line.split(';')[0]
 ^
IndentationError: expected an indented block

I'm perplexed because the code that the error refers to *is* indented:

with open('/var/www/html/mydomain.com/banlist.txt','r') as inFile:
 for line in inFile.readlines():
 ip = line.split(';')[0]
 output = os.popen( '/etc/sysconfig/iptables -A INPUT -s ' + ip + ' -j REJECT' )
 logFile.write(ip+' - Has been blockedn')

What am I missing here?

posted May 28, 2013 by anonymous

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2 Answers

+1 vote

Whenever you get perplexing indentation errors, suspect an inconsistency due to mixed tabs and spaces.

Tabs good. Spaces good. Tabs and spaces together, bad. You can run the tabnanny module over your source code:

python -m tabnanny 

to convert indentation to all spaces.

answer May 28, 2013 by anonymous
0 votes

Indentation has to be consistent. likely the for line is indented with spaces and the next line with a tab. You can use tabs and spaces, but you have to be consistent with how you use them. IE if level 1 is indented with spaces, then level 2 has to be indented with spaces up to level 1 as well. Hope that makes sense.

answer May 28, 2013 by anonymous
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I have the following script which does not return anything, no apparent mistake but my output file is empty.I am just trying to extract some decimal number from a file according to their names which are in another file. from collections import defaultdict import numpy as np

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for line in open ('Faq_ERCC_contigs_name.txt'):
 gene = line.strip().split()

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0 votes

I can create a list that has repeated elements of another list as follows:

xx = ["a","b"]
nrep = 3
print xx
yy = []
for aa in xx:
 for i in range(nrep):
 yy.append(aa)
print yy

output:

['a', 'b']
['a', 'a', 'a', 'b', 'b', 'b']

Is there a one-liner to create a list with repeated elements?


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