Python讀取文字檔並印出內容範例如下。
Python可直接使用內建的open()函式來讀取或寫出檔案。
例如下面是要被讀取的文字檔lyrics.txt的內容，lyrics.txt放在D:\路徑下。
lyrics.txt
Boy Pablo - T-Shirt
Sweaty body, the sun is burning
Yeah, I'm feelin' kinda hot right now
And my t-shirt is now useless
I thought I was ready
Obviously I wasn't
My body's burnin' and I got to get inside
'Cause I'm feelin' kinda dizzy
But remember that I love you
And you know I always will
And remember that I'll dream about you baby
(I'll dream about you baby)
Baby I have to go, really need to leave now
Yeah I'm putting on my t-shirt
It's not what I want to but I have to get inside
'Cause I'm feelin' way too dizzy
But remember that I love you
And you know I always will
And remember that I'll dream about you baby
(I'll dream about you baby)
But remember that I love you
And you know I always will
Python讀取lyrics.txt的程式如下。
open()函式第一個參數為檔案路徑，第二個參數為執行模式(mode)，'r'代表讀取模式，回傳file object。
要注意的第一個檔案路徑參數如果使用相對路徑，則相對路徑的位置是Python執行時的路徑，而不是被執行的py檔路徑。
f = open('d:/lyrics.txt', 'r') # 開啟並讀取檔案
lines = f.readlines() # 讀取檔案內容的每一行文字為陣列
for line in lines:
print(line, end = '') # 印出時結尾不印new line
f.close() # 關閉檔案
或是用with來讀取並印出檔案內容。with結束時會自動關閉檔案，也就是不用另外寫f.close()。
with open('d:/lyrics.txt', 'r') as f:
content = f.read() # 讀取檔案內容
print(content, end = '') # 印出時結尾不印new line
印出的結果：
Boy Pablo - T-Shirt
Sweaty body, the sun is burning
Yeah, I'm feelin' kinda hot right now
And my t-shirt is now useless
I thought I was ready
Obviously I wasn't
My body's burnin' and I got to get inside
'Cause I'm feelin' kinda dizzy
But remember that I love you
And you know I always will
And remember that I'll dream about you baby
(I'll dream about you baby)
Baby I have to go, really need to leave now
Yeah I'm putting on my t-shirt
It's not what I want to but I have to get inside
'Cause I'm feelin' way too dizzy
But remember that I love you
And you know I always will
And remember that I'll dream about you baby
(I'll dream about you baby)
But remember that I love you
And you know I always will
And remember that I'll dream about you baby
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