如何使字符串格式以固定的精度和语言环境类型的小数点分隔符浮动？

Question

I want to write values from dictionary to file with fixed decimal lenght and with use locale specified decimal separator.

I can do either one of those, but can I compine them both "....".format(x) call.

try:
   log_file = open(file_path, "a")
   for x in record.values():
       log_file.write(str("{:.2f}".format(x)) + ";")

Answer 1

You can replace the '.' used by the format method to any separator you want by the replace function. Eg if you want to use a + as a separator, you use the following statement:

"{:.2f}".format(5.2).replace('.', '+')

Answer 2

You can use locale module:

locale.str
Formats a floating point number using the same format as the built-in function str(float), but takes the decimal point into account.

import locale
locale.str(round(1.111, 2))