On 2019-01-15 14:07, achyuta2...@gmail.com wrote:
M <01/14/2019 08:07:01> Count:0
Total:50
Free: 20
A
B
M <01/14/2019 08:07:04> Count:1
Total:5
Free:10
A
B
M <01/14/2019 08:07:07> Count:2
Total:5
Free:3
A
B
I am trying to make a output like where it prints the free and then the
difference between the current free and previous free
For e.g
M <01/14/2019 08:07:01> Count:0 Free: 20
M <01/14/2019 08:07:04> Count:1 Free: 10 absolute difference between time and
prev time is -10
M <01/14/2019 08:07:07> Count:2 Free: 3 absolute difference between time and
prev time is -7
And then later on i need to determine the time when we had the most negative
free value.
I tried a code like this
Which printed
with open("summ4.txt") as f:
# get first line/number
nxt = int(next(f))
for n in f:
print("absolute difference between {} and {} = {}"
.format(n.rstrip(), nxt, abs(int(nxt) - int(n))))
# set nxt equal to the next number
nxt = int(next(f,0))
a=open('summ1.txt','r').readlines()
b=open('summ3.txt','r').readlines()
with open('summ.txt','w') as out:
for i in range(0,365):
print>>out,a[i].rstrip(),b[i]
I hit error as
Traceback (most recent call last):
File "3.py", line 39,
in <module>
.format(n.rstrip(),
nxt, abs(int(nxt) - int(n))))
ValueError:
zero length field name in format
I guess my input file has a tab in the start and not able to get a difference
rightly.
.
Any pointers on how to achieve the desired result?
You didn't say Which version of Python you're using.
The "print>>" tells me that it's Python 2.
It's complaining about the '{}' in the format string.
Format strings were introduced in Python 2.6 and auto-numbering ('{}'
allowed instead of '{0}') was introduced in Python 2.7.
As it's complaining about a missing field name in '{}', it must be
Python 2.6, which is ancient!
And Python 2.7 reaches its end of life soon.
You should switch to Python 3 unless you have a very good reason for
staying on Python 2, and, if you must use Python 2, use Python 2.7.
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