count repeated elements in the list

[jhn19833]

I am new to Python. I am trying to find a simple way of getting a count of the number of elements repeated in a file(of first column)
e.g file contain the following list(-First column contain IP address)

10.2.1.12 2 4
192.12.23.2 3 5
10.2.1.12 1 2
192.11.23.1 3 5
10.2.1.12 4 5
192.12.23.2 1 6

Output:
IP Address count( number of repeated of 1st column)
10.2.1.12 3
192.12.23.2 2
192.11.23.1 1

[bvdet]

If the order is not important, this can easily be done with a dictionary and dict method setdefault.

f = open("ip.txt")
dd = {}
for line in f:
    lineList = line.split()
    if lineList:
        ip = lineList[0]
    v = dd.setdefault(ip, 0)
    dd[ip] += 1

f.close()

for key in dd:
    print key, dd[key]

To display in order of count:

ipList = [(key, dd[key]) for key in dd]
ipList.sort(key=lambda a: a[1])
for item in ipList:
    print item[0], item[1]

[maya29988]

You can use dictionaries for this

d=dict()
fp=open("file.txt")
for i in fp:
    l=i.split()[0]
    if l in d:
        d[l] += 1
    else:
        d[l] = 1
        
print d.items()