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You can also do it with simple generator expression:

for line in (l for f in (file1, file2) for l in f):
    # do something with line

with this method you can specify some condition in expression itself:

for line in (l for f in (file1, file2) for l in f if 'text' in l):
    # do something with line which contains 'text'

The example above is equivalent to this generator and loop:

def genlinewithtext(*files):
    for file in files:
        for line in file:
            if 'text' in line:
                yield line

for line in genlinewithtext(file1, file2):
    # do something with line which contains 'text'

You can also do it with simple generator expression:

for line in (l for f in (file1, file2) for l in f):
    # do something with line

with this method you can specify some condition in expression itself:

for line in (l for f in (file1, file2) for l in f if 'text' in l):
    # do something with line which contains 'text'

The example above is equivalent to this generator with loop:

def genlinewithtext(*files):
    for file in files:
        for line in file:
            if 'text' in line:
                yield line

for line in genlinewithtext(file1, file2):
    # do something with line which contains 'text'

You can also do it with simple generator expression:

for line in (l for f in (file1, file2) for l in f):
    # do something with line

with this method you can specify some condition in expression itself:

for line in (l for f in (file1, file2) for l in f if 'text' in l):
    # do something with line

You can also do it with simple generator expression:

for line in (l for f in (file1, file2) for l in f):
    # do something with line

with this method you can specify some condition in expression itself:

for line in (l for f in (file1, file2) for l in f if 'text' in l):
    # do something with line which contains 'text'

The example above is equivalent to this generator and loop:

def genlinewithtext(*files):
    for file in files:
        for line in file:
            if 'text' in line:
                yield line

for line in genlinewithtext(file1, file2):
    # do something with line which contains 'text'

You can also do it with simple generator expression:

for line in (l for f in (file1, file2) for l in f):
    # do something with line

with this method you can specify some condition in expression itself:

for line in (l for f in (file1, file2) for l in f if 'text' in l):
    # do something with line

You can also do it with simple generator expression:

for line in (l for f in (file1, file2) for l in f):
    # do something with line

with this method you can specify some condition in expression itself:

for line in (l for f in (file1, file2) for l in f if 'text' in l):
    # do something with line