如何将变量的值作为字符串的一部分打印到文件中？

Question

If I have:

a=10
b = 20

how do I write 10 and 20 separated by a tab to the file? Doing:

myfile.write('a\tb')

just prints the literal string to the file. How to substitute the values of a and b into the string?

Answer 1

Python does not recognize variable names inside a string literal. Instead, it treats them as normal text.

In order to do what you want, you can use str.format :

myfile.write('{}\t{}'.format(a, b))

This will take the values of a and b , convert them into strings, and then insert them into the string '{}\\t{}' . The curly braces {} denote where the values will be inserted.

Answer 2

他们必须不在''

myfile.write(str(a)+'\t'+str(b))

Answer 3

This is a pythonic way of doing it

with open('Filename.fileformat', 'w') as f:
    a="10"
    b="20"
    lst = [a,b]
    for i in lst:
        print ''.join(i)
        f.write(str(''.join(i)) +'\n')

Answer 4

您可以轻松地使用格式化字符串

myfile.write('%d\t%d' % (a, b))