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L = [[5, 8, 7], ['hello', 'hi', 'hola'], [6.6, 1.54, 3.99], ['small', 'large']]

# Test if 'hola' is in the list L. Save to variable name test1
if 'hola' in L:
    test1 = True
else:
    test1 = False

# Test if [5, 8, 7] is in the list L. Save to variable name test2
if [5,8,7] in L:

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lst = [['apple', 'orange', 'banana'], [5, 6, 7, 8, 9.9, 10], ['green', 'yellow', 'purple', 'red']]

#Test to see if 'yellow' is in the third list of lst. Save to variable ``yellow``
if 'yellow' in lst[2]:
    yellow = True
else:
    yellow = False

#Test to see if 4 is in the second list of lst. Save to variable ``four``

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nested = [['dog', 'cat', 'horse'], ['frog', 'turtle', 'snake', 'gecko'], ['hamster', 'gerbil', 'rat', 'ferret']]
output = nested[1][2]

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def length(lst):
    if len(lst) >= 5:
        return("Longer than 5")
    else:
        return("Less than 5")

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# Write a function called change that takes any string, adds “Nice to meet you!” to the end of the argument given, and returns that new string.

def change(string):
    Str = "{}Nice to meet you!".format(string)
    return Str

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#Write code to find out how many lines are in the file emotion_words.txt as shown above. Save this value to the variable num_lines. Do not use the len method.

file = open("emotion_word.txt","r")
count = 0
for aline in file.readlines():
    count += 1
num_lines = count

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#Find the number of lines in the file, travel_plans2.txt, and assign it to the variable num_lines.

file = open("travel_plans2.txt","r")
count = file.readlines()
num_lines = len(count)

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#Create a string called first_forty that is comprised of the first 40 characters of emotion_words2.txt.
file = open("emotion_words2.txt","r")
const = file.read()
first_forty = const[:40]

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#Using the file school_prompt2.txt, find the number of characters in the file and assign that value to the variable num_char.
fil = open("school_prompt2.txt","r")
consts = fil.read()
num_char = len(consts)
fil.close()

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# wap to read last n files from a file
f = open("output.txt", "r")
n = int(input("Enter No. of lines:"))
lst = []
for x in f:
    l1 = f.readlines()
    lst = lst +l1
print(lst[n:])
f.close()