ch10

문제 1

lib.py

def read():
    f=open("input.txt", "r")
    for _ in range(3):
        str = f.readline().rstrip()
        print(str)
    f.close()

main.py

import lib

def main():
    lib.read()

if __name__ == "__main__":
    main()

문제 2

lib.py

def read():
    f=open("input.txt", "r")
    res = ""
    for str in f:
        str = str.rstrip()
        words = str.split()

        for word in words:
            if(len(res) < len(word)):
                res = word

    f.close()
    return res

main.py

import lib

def main():
    res = lib.read()
    print(f"가장 긴 단어는 {res} 입니다.")

    
if __name__ == "__main__":
    main()

문제 3

lib.py

def read(fileName, num):
    f=open(fileName, "r")
    index = 1
    for str in f:
        str = str.rstrip()
        if(index == num):
            f.close()
            return str
        index += 1

    f.close()
    return None