Use , to separate strings and variables while printing:
print "If there was a birth every 7 seconds, there would be: ",births,"births"
, in print statement separtes the items by a single space:
>>> print "foo","bar","spam"
foo bar spam
or better use string formatting:
print "If there was a birth every 7 seconds, there would be: {} births".format(births)
String formatting is much more powerful and allows you to do some other things as well, like : padding, fill, alignment,width, set precision etc
>>> print "{:d} {:03d} {:>20f}".format(1,2,1.1)
1 002 1.100000
^^^
0's padded to 2
Demo:
>>> births = 4
>>> print "If there was a birth every 7 seconds, there would be: ",births,"births"
If there was a birth every 7 seconds, there would be: 4 births
#formatting
>>> print "If there was a birth every 7 seconds, there would be: {} births".format(births)
If there was a birth every 7 seconds, there would be: 4 births