使用Python

Question

以下是我想要实现的目标：

my_list = ['foo', 'fob', 'faz', 'funk']

string = 'bar'

my_new_list = [ string + x for x in my_list]

print my_new_list

问题是我的所有单词都在文本文件中。例如：

FOO

FOB

FAZ

芬克

如何读取文本文件并编写循环以在每个单词前面附加单词“bar”并生成新文件？

Answer 1

喜欢那个？

with open("myfile.txt") as f, open("output.txt", "w") as out:
    for line in f:
        out.write("bar" + line)

Answer 2

您可以使用readlines()获取文件中的行列表，然后使用writelines()将行写入文件：

with open('/path/to/infile') as infile:
    lines = infile.readlines()

string = 'bar'
my_new_list = [string + x for x in lines]

with open('/path/to/outfile', 'w') as outfile:
    outfile.writelines(my_new_list)

Answer 3

file_object = open('example.txt','r')
output = open('data','w+')
string = 'bar'
for line in file_object:
    output.write(string+line)
file_object.close()
output.close()

这可能会对你有帮助。