python, perl socket blocking difference when reading data from it? -

in perl, can do

socket(server, pf_inet, sock_stream, getprotobyname('tcp')); bind(server, $my_addr); listen(server, somaxconn); $client_address = accept(client, server); $line = <client>;  # read until newline or eof print $line 

when access via browser $line = <client> return , print without blocking. if i'm trying same in python following

from socket import * host = "" port = 9000 address = (host, port) server = socket(af_inet, sock_stream) server.bind(address) server.listen(somaxconn) client, addr = server.accept() client_fd = client.makefile() data = client_fd.readlines() print data 

client_fd.readlines() blocking unless kill request in browser. there way around this? , why <client> in perl not blocking?

your (updated) perl example reading one line client; python 1 reading all lines of input client, until socket closed. , client doesn't close socket, because it's hoping able http keepalive. should use readline instead of readlines read single line of input. or, if you're trying speak http, should use module made that.