파이썬 파일 읽기, 쓰기

# 파일 읽기, 쓰기
# 읽기 모드 : r, 쓰기 모드(기존 파일 삭제): w, 추가 모드(파일 생성 또는 추가): a

# 파일 읽기
f = open('./files/review.txt', 'r')
content = f.read()
print(content)

# 반드시 close 리소스 반환
f.close()
print('---------------------')

with open('./files/review.txt','r') as f:
    c = f.read()
    print(c)
    print(list(c))
    print(iter(c))

print('--------------------')

with open('./files/review.txt', 'r') as f:
    for c in f:
        print(c.strip())
print('-----------------')

with open('./files/review.txt', 'r') as f:
    content = f.read()
    print('>', content)
    content = f.read()
    print('>', content)

print('-------------------')
with open('./files/review.txt', 'r') as f:
    line = f.readline()
    # print(line)
    while line:
        print(line, end='##')
        line = f.readline()

 

with open('./files/review.txt', 'r') as f:
    contents = f.readlines()
    print(contents)
    for c in contents:
        print(c, end='###')

 

 

 

score = []
with open('./files/score.txt', 'r') as f:
    for line in f:
        score.append(int(line))
    print(score)
# 6자리 소수점 3번
print('Avg: {:6.3}'.format(sum(score)/len(score)))

with open('./files/text1.txt', 'w') as f:
    f.write('Niceman!\n')

with open('./files/text1.txt', 'a') as f:
    f.write('Goodman!\n')

from random import randint

with open('./files/text2.txt', 'w') as f:
    for cnt in range(6):
        f.write(str(randint(1, 50)))
        f.write('\n')

with open('./files/text3.txt', 'w') as f:
    list = ['kim\n', 'park\n', 'lee\n']
    f.writelines(list)

with open('./files/text4.txt', 'w') as f:
    print('Test Contests1', file=f)
    print('Test Contests2', file=f)