#讀寫文字檔案
defmain()
: f =
open
("twoone.txt"
,"r"
,encoding=
"utf-8"
)print
(f.read())
f.close
main(
)
#讀寫文字檔案，異常處理
defmain()
: f =
none
try:
f =open
("twoone.txt"
,"r"
,encoding=
"utf-8"
)print
(f.read())
except filenotfounderror:
print
("無法開啟指定的檔案!"
)except lookuperror:
print
("指定了未知的編碼!"
)except unicodedecodeerror:
print
("讀取檔案時解碼錯誤!"
)finally
:if f:
f.close(
)if __name__ ==
"__main__"
: main(
)
import time
defmain()
:#一次性讀取整個檔案的內容
with
open
("twoone.txt"
,"r"
,encoding=
"utf-8"
)as f:
print
(f.read())
#通過for-in 迴圈逐行讀取
with
open
("twoone.txt"
,mode =
"r")
as f:
for line in f :
print
(line ,end=
" ")
time.sleep(
0.5)
print()
#讀取檔案按行讀取到列表中
with
open
("twoone.txt"
)as f :
print
(line)
if __name__ ==
"__main__"
: main(
)
from math import sqrt
defis_prime
(n):
assert n >
0for factor in
range(2
,int
(sqrt(n)+1
)):if n%factor ==0:
return
false
return
true
if n!=
1else
false
defmain()
: filenames =
("a.txt"
,"b.txt"
,"c.txt"
) fs_list =
try:
for filename in filenames:
open
(filename,
"w",encoding =
"utf-8"))
for number in
range(1
,10000):
if is_prime(number)
:if number<
100:
fs_list[0]
.write(
str(number)
+"\n"
)elif number<
1000
: fs_list[1]
.write(
str(number)
+"\n"
)else
: fs_list[2]
.write(
str(number)
+"\n"
)except ioerror as ex :
print
(ex)
print
("寫檔案時發生錯誤"
)finally
:for fs in fs_list:
fs.close(
)print
("操作完成"
)if __name__ ==
"__main__"
: main(
)
#讀寫二進位制檔案
defmain()
:try
:with
open
("ball.png"
,"rb"
)as fs1:
data =fs1.read(
)print
(type
(data)
)with
open
("ball_game.png"
,"wb"
)as fs2:
fs2.write(data)
except filenotfounderror as e:
print
("指定的檔案無法開啟"
)except ioerror as e:
print
("讀寫檔案出現錯誤"
)print
("程式執行結束"
)if __name__ ==
"__main__"
: main(
)
#儲存jaon檔案
import json
defmain()
: mydict =,,
]}try:
with
open
("data.json"
,"w"
,encoding=
"utf-8"
)as fs:
json.dump(mydict,fs)
except ioerror as e :
print
(e)print
("儲存資料完成!"
)if __name__ ==
"__main__"
: main(
)
———————————————————————————————————————————#讀寫json檔案
import requests
import json
defmain()
: resp =requests.get(
"") data_model =json.loads(resp.text)
for news in data_model[
'newslist']:
print
(news[
"title"])
if __name__ ==
"__main__"
: main()""
有錯誤，待完善，還沒搞定，搞懂
""
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