1. 如何打開和讀取文本文件內容
f = open('./files/readme.txt', 'r')
print(type(f))
<class '_io.TextIOWrapper'>
2. 使用 open函數打開文件,並返回一個 IO對象,該對象有3個用於讀取文件的方法: read、readline 和 readlines。請使用代碼描述這 3個方法的區別
print(f.read())
f.close()
hello world
I love you
How are you?
f = open('./files/readme.txt', 'r')
f.read(3)
f.close()
f = open('./files/readme.txt', 'r')
f.seek(6)
print(f.read(5))
f.close()
world
f = open('./files/readme.txt', 'r')
print(f.readline())
print(f.readline())
f.close()
hello world
I love you
f = open('./files/readme.txt', 'r')
print(f.readline(2))
print(f.readline(20))
f.close()
he
llo world
f = open('./files/readme.txt', 'r')
print(f.readlines())
f.close()
['hello world\n', 'I love you\n', 'How are you?']
f = open('./files/readme.txt', 'r')
print(f.readlines(3))
f.close()
['hello world\n']
f = open('./files/readme.txt', 'r')
print(f.readlines(12))
f.close()
['hello world\n', 'I love you\n']
48 - 在json 序列化時如何處理日期類型的值