如何编写 python 从名为“file1.txt”的文本文件中读取前两行 将从“file1.txt”读取的两行写入新文件“file2.txt”

Question

Read the first two lines from a text file named "file1.txt" Write the two lines read from "file1.txt" to a new file "file2.txt"

Answer 1

a_file = open("file1.txt", "r")
number_of_lines = 2
with open("file2.txt", "w") as new_file:
    for i in range(number_of_lines):
        line = a_file.readline()
        new_file.write(line)
a_file.close()

I'm sure there is a neater solution out there somewhere but this will work! Hope it helps you :)

Answer 2

Write a Python program to

1. Read the first two lines from a text file named "file1.txt"
2. Write the two lines read from "file1.txt" to a new file called "file2.txt"
3. Read "file2.txt" and Print the contents

fhandle1 = open("file1.txt","r")
fhandle2 = open("file2.txt","w")

str = fhandle1.readline()
fhandle2.write(str)
str = fhandle1.readline()
fhandle2.write(str)

fhandle1.close()
fhandle2.close()

fhandle3 = open("file2.txt")
print(fhandle3.read())
fhandle3.close()

Answer 3

For 2 lines:

with open("file1.txt", "r") as r:
    with open("file2.txt", "w") as w:
        w.write(r.readline() + r.readline())

Each time r.readline() is called, it goes to the next line. So if you wanted to read n lines; use:

Note that .readline() + r.readline() is only 2 seperate lines if there is a new line ( \n ) at the end of the first line

with open("file1.txt", "r") as r:
    with open("file2.txt", "w") as w:
        # Change 2 to number of lines to read
        for i in range(2):
            w.write(r.readline())

Answer 4

f1=open("file1.txt","r")
f2=open("file2.txt","w")
fcontent=f1.readline()
f2.write(fcontent)
fcontent=f1.readline()
f2.write(fcontent)
f1.close()
f2.close()

Answer 5

 f1 = open("file1.txt","r")

    f2 = open("file2.txt","w")

    str = f1.readline()
    f2.write(str)
    str = f1.readline()
    f2.write(str)
    
    f1.close()
    f2.close()
    
    f3 = open("file2.txt")
    print(f3.read())
    f3.close()

Answer 6

fhandle1 = open("file1.txt")
fhandle2 = open("file2.txt","w")
fcontents = fhandle1.readline()
fhandle2.write(fcontents)
fcontents = fhandle1.readline()
fhandle2.write(fcontents)
fhandle1.close()
fhandle2.close()

fhandle3 = open("file2.txt")
print(fhandle3.read())
fhandle3.close()

Answer 7

fhandle1 = open("file1.txt","r")

l1 = fhandle1.readline()

l2 = fhandle1.readline()

fhandle2 = open("file2.txt","w")

fhandle2.write(l1)

fhandle2.write(l2)

fhandle2 = open("file2.txt")

print(fhandle2.read())

fhandle2.close()