Python 3 readline() does not work

Python 3 readline() does not work

By : Abhishek Katyal
Date : November 19 2020, 03:01 PM
fixed the issue. Will look into that further Your question title states readlines(), your question code uses readline(). Two different functions The size/hint parameter you have specified reads up to the number of bytes (not lines in either case -- bytes).
You probably meant something like this
code :
entered_password = datafile.readlines()[1].strip()

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Python 2.7.4 on Ubuntu 10.04, Import readline error(Tried many ways never work)

Python 2.7.4 on Ubuntu 10.04, Import readline error(Tried many ways never work)

By : CTO
Date : March 29 2020, 07:55 AM
I wish did fix the issue. As in the title, my system version is Ubuntu 10.04. The default version of Python is 2.6.5. When I start python2.6 in command line and , I tried again, installed these packets:
code :
sudo apt-get install build-essential
sudo apt-get install libreadline5-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
How does readline and readlines work in Python

How does readline and readlines work in Python

By : Jenny
Date : March 29 2020, 07:55 AM
may help you . So I have a text file that contains some text in the following format: , With this file:
code :
$ cat /tmp/test.txt
19 15 10
>>> with open('/tmp/test.txt') as f:
...    data=f.readlines()
>>> data
['Largest\n', '19 15 10\n', '12']
>>> a,b,c=data
>>> a
>>> b
'19 15 10\n'
>>> c
>>> a,b,c=data[0:3]
>>> a=data[0].strip()
>>> b=map(int, data[1].strip().split())
>>> c=int(data[2])
>>> a
>>> b
[19, 15, 10]
>>> c
Python's readline() function seeming not to work?

Python's readline() function seeming not to work?

By : anilsatyakumar
Date : March 29 2020, 07:55 AM
will be helpful for those in need Because you opened the file in a+ mode, the file pointer starts at the end of the file. After all, that is where you would normally append text.
If you want to read from the top, you need to place fileA.seek(0) just before you call readline:
code :
line = fileA.readline()
Python:Why readline() function doesn't work for file looping

Python:Why readline() function doesn't work for file looping

By : Alyx Vance
Date : March 29 2020, 07:55 AM
this one helps. You are messing up the internal state of the file-iteration, because for optimization-reasons, iterating over a file will read it chunk-wise, and perform the split on that. The explicit readline()-call will be confused by this (or confuse the iteration).
To achieve what you want, make the iterator explicit:
code :
 import sys

 with open(sys.argv[1]) as inf:
     fit = iter(inf)
     for line in fit:
         print "current", line
             print "next", fit.next()
         except StopIteration:
Python - Readline Control-D after non-empty line does not work why?

Python - Readline Control-D after non-empty line does not work why?

By : Oleg
Date : March 29 2020, 07:55 AM
This might help you I think my answer from here can be copied immediately:
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