python檔案操作一（read，write）

r,w的方式就是讀寫純文字

rb，wb是讀寫各種內容，以二進位制的方式

read(「path」,「r」)預設是r

假設文字為

aaa

bbb

stream =

open
("test.txt"
)container = stream.read(
)print
(container)

aaa

bbb

result = stream.readable(

)print
(result)

true

line = stream.readline(

)print
(line)

aaa

lines = stream.readlines(

)print
(lines)

[

"aaa"
,"bbb"
]

stream =

open
("test.txt"
,"w"
)# a 追加
s ="""
aslnfdov fdknvb
jn"""
stream.write(s)
stream.write(
"rfffff"
)stream.writelines(
['rfffff\n'
,'ssss\n'
,'dddd\n'])
stream.close(
)

aslnfdov fdknvb

jnrfffff

stream =

open
("test.txt"
,"w"
)stream.writelines(
['rfffff\n'
,'ssss\n'
,'dddd\n'])
stream.close(
)

rfffff

ssss
dddd

stream =

open
("test.txt"
,"a"
)

with

open
("test.txt"
,"rb"
)as f:
txt = f.read(
)

with

open
("test.txt"
,"rb"
)as f:
txt = f.read(
)with
open
("test2.txt"
,"wb"
)as w:
w.write(txt)

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