如何检查列表项是否在另一个列表中

Question

I am trying to compare two lists (expected and actual) . I wanted to check whether expected list items are present in actual list items. I am trying the following sample code . I can try set(expected)-set(actual) .This will give me difference but i want to check if item is present else display which item is not present .Can someone guide me , how to achieve below expected result or what mistake i am doing. Please ignore if there are mistakes as i am a learner.

actual = ['resources.sh', 'server.properties', 'resources.csv', 'resources.log', 'sampleresources.csv']
    expected = ['resources.sh', 'server.properties', 'resources.csv', 'resources.log']
    for i in expected:
        for b in actual:
            if b.split(".")[0] in i:
                print "{} is present".format(b)
            else:
                print "{} is not present".format(i)

Actual results:

resources.sh is present
resources.sh is not present
resources.csv is present
resources.log is present
resources.sh is not present
server.properties is not present
server.properties is present
server.properties is not present
server.properties is not present
server.properties is not present
resources.sh is present
resources.csv is not present
resources.csv is present
resources.log is present
resources.csv is not present
resources.sh is present
resources.log is not present
resources.csv is present
resources.log is present
resources.log is not present

Expected Result:

resources.sh is present
server.properties is present
resources.csv is present 
resources.log is present 
sampleresources.csv is not present

Answer 1

You can just loop through actual once:

for i in actual:
     if i in expected:
         print(i, "is present")
     else:
         print(i, "is not present")

Output:

resources.sh is present
server.properties is present
resources.csv is present
resources.log is present
sampleresources.csv is not present

Answer 2

actual = ['resources.sh', 'server.properties', 'resources.csv','resources.log', 'sampleresources.csv']
expected = ['resources.sh', 'server.properties', 'resources.csv',  'resources.log']
for i in actual:
    if i in expected:print "{} is present".format(i)
    else:print "{} is not present".format(i)

output:

resources.sh is present
server.properties is present
resources.csv is present
resources.log is present
sampleresources.csv is not present

Answer 3

[print ("{} is present".format(b)) if b in expected  
else print("{} is not present".format(b)) for b in actual]

Answer 4

actual = ['resources.sh', 'server.properties', 'resources.csv', 'resources.log', 'sampleresources.csv']
expected = ['resources.sh', 'server.properties', 'resources.csv', 'resources.log']

result = [elem + ' is present' if elem in expected else elem + ' is not present' for elem in actual]
print result

Answer 5

You could use list comrehension to have a cleaner code:

  actual = ['resources.sh', 'server.properties', 'resources.csv', 'resources.log', 'sampleresources.csv']
  expected = ['resources.sh', 'server.properties', 'resources.csv', 'resources.log']

  def print_msg(x):
      print(x,'is present')

  [print_msg(b) for i in actual for b in expected if i == b]