2_list

#1
n = input("Enter a number: ")
if len(n) == 2:
    print("Two-digits")
else:
    print("No")


#2
from math import *


def func(x): # сама функция
    return (10 - 2 * exp(x)) / (sin(x) + 1)


array = []  # массив, в котором будем хранить пары (значение, точка)
for x in range(-10, 11):
    array.append([func(x), x])  # добавляем все пары в массив

print("Where the lowest value is reached:", min(array)[1])
print("The lowest value of the function:", min(array)[0])

#3
fhand = open("text_3_1.txt")
for i in fhand:
    if int(i) % 2 == 1:
        print(int(i), sep=" ")

#4
fhand = open("test_4_1.txt")
s = fhand.read()
s = s.split()
s = set(s)
print("Unique words: ", len(s))
print(*sorted(s))


#5
import random


def func(fhand):
    n = int(input())
    products = ['undergraduate', 'PhD', 'masters']
    f = open(fhand, 'w')
    for i in range(n):
        ind = random.randint(0, 2)
        string = products[ind] + ',' + str(random.randint(1, 50)) + '\n'
        f.write(string)


func('task_file.txt')