निम्न कोड दिए गए टेक्स्ट फ़ाइल में प्रतिस्थापन करता है।
प्रतिस्थापन के बाद, टेक्स्ट एक नई टेक्स्ट फ़ाइल 'bar.txt' में लिखा जाता है
उदाहरण
f1 = open('foo.txt', 'r') f2 = open('bar.txt', 'w') for line in f1: print line f2.write(line.replace('Poetry', 'Prose')) f2 = open('bar.txt', 'r') for line in f2: print line, f1.close() f2.close()
आउटपुट
यह आउटपुट देता है
Poetry is often considered the oldest form of literature. Poetry today is usually written down, but is still sometimes performed. Prose is often considered the oldest form of literature. Prose today is usually written down, but is still sometimes performed.