I am supposed to append all the integer values from STDIN in python.
For example:
5
6
0
4
2
4
1
0
0
4
Suppose the below is the integers coming from stdin, how can append these values in a list?
My code:
result = []
try:
while raw_input():
a = raw_input()
result.append(int(a))
except EOFError:
pass
print result
Could anyone help me? Thank you
Result is only printing [6, 4, 4, 0, 4]
The problem is that you have called raw_input() twice.
while raw_input(): # this consumes a line, checks it, but does not do anything with the results
a = raw_input()
result.append(int(a))
As a general note about python. Stream like objects, including files opened for reading, stdin and StringIO among others, have an iterator that iterates over there lines. So your program can be reduced to the pythonic.
import sys
result = [int(line) for line in sys.stdin]
You are consuming every second raw_input in the while line, change this to test that 'a' is non-null. For example:
result = []
try:
a = raw_input()
while a:
result.append(int(a))
a = raw_input()
except EOFError:
pass
print result
Okay my issue is resolved using fileinput module
import fileinput
for line in fileinput.input():
print line
Setting the raw_input() in the while loop to a variable ('a' in your case) should fix the issue.
result = []
a = raw_input("Enter integer pls:\n> ")
try:
while a is not '':
result.append(int(a))
a = raw_input("Enter another integer pls:\n> ")
except ValueError:
pass
print result
raw_inputtwice per loop