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#檔案的讀取、寫入
#open("檔案路徑",mode="開啟模式")
#絕對路徑 ex:\Users\yangmbp\Documents\TEST.txt
#相對路徑 ex:以程式的位置做延伸:TEST.txt
'''
mode
r : 讀取檔案,如果沒有檔案會發生錯誤
w : 寫入內容,如果沒有檔案會自動產生
x : 建立檔案
a : 打開文件,並且在最後結尾繼續寫入資料
t : 一般文字檔,default模式使用t
b : 二進位模式,例如模式設定為rb,讀取圖片檔
'''
#try-except寫法
try:
#file=open("/Users/yangmbp/Documents/TEST.txt",mode="r") #開啟
file=open("/Users/yangmbp/Documents/TEST.txt" , mode="w")
file.write("text1,test2\n")
file.write("a,b,c,d,e\n")
finally:
file.close() #記得把檔案關起來才不會佔用資源
#另一種打開檔案的方式with as(適用在有支援環境管理協定的物件),就不用每次都要寫file.close()
#print(file.read()) #印出讀取的內容用file.read
#print(file.readline()) #只讀取一行file.readline
#1
with open("TEST.txt",mode="r") as f:
#使用函式read讀取資料,但會讀取所有文字
print(f.read())
#s=f.read()
#print(s)
#2 for迴圈,把每一行都讀出來
with open("TEST.txt",mode="r") as f:
for line in f:
print("line content : "+line)
#3 readlines把每一行的資料放到列表裡面
with open("TEST.txt",mode="r") as f:
print(f.readlines())
'''
#覆寫
#中文情形下若出現亂碼可以用enciding=utf-8
file=open("TEST.txt",mode="a",encoding="utf-8")
file.write(" Mr.white \n 你好")
file.close()
'''
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