Question

我最初在string中有以下列，我将它们转换为float用于某些计算目的。

  Growth1               Growth2
4,365.46%               124.48%
   45.29%       2.222222222222%  
  251.48%      23.999999999999%

df[['Growth1', 'Growth2']] = df[['Growth1', 'Growth2']].replace('%|,', '', regex=True).astype(float, errors='ignore')/100

  Growth1               Growth2
  43.6546                1.2448
   0.4529      0.02222222222222  
   2.5148      0.23999999999999

但是，它们是十进制格式，我希望它们以％格式显示。但我不能在以下行之后添加{:,.2%}'.format：

df[['Growth1', 'Growth2']] = df[['Growth1', 'Growth2']].replace('%|,', '', regex=True).astype(float, errors='ignore')/100(formatters=[{:,.2%}'.format])

有什么方法可以将float保留在% format中并用最少的代码（如1或2行）将其四舍五入到小数点后两位？谢谢。

期望的输出：

  Growth1     Growth2
4,365.46%     124.48%
   45.29%       2.22%  
  251.48%      24.00%    # or 23.99%, no big deal

Answer 1

看起来您用于format的参数不正确。它应该是{:,.2f}和％outside：

示例：

>>> "{:,.2f}%".format(4365.46)
'4,365.46%'

Answer 2

df['Growth1'] = pd.Series(['{0:.2f}%'.format(val * 100) for val in df['Growth1']], index = df.index)

“Growth2”栏目相同。

注意：如果您想保留原始列，只需将新名称命名为“Growth1”

Answer 3

也许正在使用pandas style？

var msg="";
  var DOMstring = {
  firstName:'uname',
  lastName:'ulastname',
  userName:'uuname',
  contact:'contact',
  email:'email',
  pass1:'pass-1',
  pass2:'pass-2',
  submit:'submit-btn'
}
function validate(){
  var status = false;
  var firstName = document.getElementById(DOMstring.firstName).value;
  status = checkText(firstName,'First Name');
  var lastName = document.getElementById(DOMstring.lastName).value;
  status = checkText(lastName,'Last Name');
  var userName = document.getElementById(DOMstring.userName).value;
  status=checkText(userName,'Username');
  var contact = document.getElementById(DOMstring.contact).value;
  status = checkNumber(contact);
  var pass1 = document.getElementById(DOMstring.pass1).value;
  status = checkPass(pass1);
  var pass2 = document.getElementById(DOMstring.pass2).value;
  status = comparePass(pass1,pass2);

  if(status == true){
    alert("successfully created an account");
    return true;
  }else{
      alert("Please consider the following error messages<br>"+msg);
      return false;
   }
}

function checkText(DOMname,name){
  var ckeck_text =  /^[A-Za-z]$/;
  if(!check_text.test(DOMname)){
    msg += name + ' cannot contain numbers or special character.<br>';
    return false;
   }
 return true;
}

function checkNumber(DOMnumber){
  var check_number = /^[0-9]{10}$/;
  if(!check_number.test(DOMnumber)){
    msg += 'Number contains 10 digit only<br>';
    return false;
  }
  return true;
}

function checkPass(DOMpass1){
  var check_pass = /^(?=.*[\d])(?=.*[!@#$%^&*])[\w!@#$%^&*]{8,16}$/;
  if(!check_pass.test(DOMpass1)){
    msg += 'Password field should contain alphanumeric values and special character<br> and should be in range from 8 to 16<br>';
    return false;
  }
return true;
}

function comparePass(DOMpass1,DOMpass2){
  if(!DOMpass1 === DOMpass2){
    msg += 'Both password does not match<br>';
    return false;
  }
  return true;
}

当您通过此次调用显示返回的对象时，就像您通常使用数据框一样，它会以您要求的方式格式化您的列。

将字符串转换为float并保持％格式

3 个答案: