Python def 1

file = open("filehandling_ex.txt",'w+')

temperatures=[10,-20,-289,100]

def c_to_ff(c):
    if c < -273.15:
        return "Cannot write. " + str(c) + " is under -273.15"
    else:
        f = c*9/5 + 32 # celisus to farenheit
        return f

for temp in temperatures:
    result = str(c_to_ff(temp))+"\n"
    file.write(result)
    print(c_to_ff(temp))

file.close()

# close 없이 쓰려면 with open 사용
with open("filehandling_ex.txt", 'a+') as file:
    file.seek(0)
    content = file.read()
    file.write("\nAWESOME !")

Python def 1 기억상실 보존용