从一列字符串中提取浮点数并四舍五入到小数点后两位 [英] Extract floats from a column of strings and round to 2 decimal places

问题描述

如果我有一列中包含值的数据框

If i have a data frame with values in a column

4.5678
5
7.987.998

我只想提取小数点后2个值的数据

I want to extract data for only 2 values after the decimal

4.56
5
7.98

数据存储为字符串.任何帮助将不胜感激.谢谢 ！

The data is stored as a string. Any help will be appreciated. Thank you !

推荐答案

str = "7.987.998"
ind = str.find('.')
if ind > 0:
  res = str[:ind+3]

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