如何写Python以读取名为“ file1.txt”的文本文件中的前两行。写下“ file1.txt”的两行读取。到新文件“ file2.txt”

Question

从名为“ file1.txt”的文本文件中读取前两行

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()

我敢肯定，那里的某个地方有一个整洁的解决方案，但这会起作用！
希望它能帮助您:)

Answer 2

编写一个python程序，以

1. 读取名为“ file1.txt”的文本文件的前两
2. 行
   “ file2.txt”
3. 读取“ file2.txt”并打印内容

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

对于2行：

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

每次调用r.readline（），它将转到下一行。因此，如果您想阅读n lines；使用：

请注意，如果在第一行的末尾有一条新行（\ n），则.Readline（） + r.readline（）仅是2个分开行

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()

Answer 8

#reading the first 2 lines from the file named "file1.txt" and assigning the contents of 2 lines to variables named line1, line2
with open("file1.txt","r") as f1:
    line1=f1.readline()
    line2=f1.readline()
#openning the file named "file2.txt" to write those read lines(in write mode)
with open("file2.txt","w")as f2:
    f2.write(line1+line2)
#openning the same file in readable mode and print
with open("file2.txt","r")as readable:
    print(readable.read())
#with open() structure will close our files automatically
#for further studies refer this site https://www.w3schools.com/python/python_file_handling.asp