Creating a function for dynamic string input

Question

Hi i am trying to create a function which allow string input as below:

def change_template(condition):
    template='''
             <div style="background:<%= 
             (function colorfromint(){
              if(condition){ #change the condition inside here
              return("green")}
                }()) %>; 
            color: black"> 
        <%= value %>
        </div>
        '''
    return template

So whenever I input condition into change_template function, let say change_template('A' < 'B') then the condition would be

template='''
          <div style="background:<%= 
          (function colorfromint(){
          if('A' < 'B'){ #change the condition inside here
          return("green")}
          }()) %>; 
          color: black"> 
          <%= value %>
          </div>
            '''

Okay, so the question is how to modify the "template" string so as to insert the content from condition? Or just what exactly? — Karl Knechtel
– Karl Knechtel, Commented May 15, 2020 at 4:07
@KarlKnechtel yup to modify the template based on the content from condition — rain123
– rain123, Commented May 15, 2020 at 4:11
Maybe try adding your html into 1 line join the strings either side of condition like '<div>...' + condition + '...</div>' — T4roy
– T4roy, Commented May 15, 2020 at 4:11

CKasper · Accepted Answer · 2020-05-15 04:06:40Z

2

You can do this to set your condition inside your template, or you can use format like what @Daniel said.

def change_template(condition):
  template='''
        <div style="background:<%= 
        (function colorfromint(){
        if('''+condition+'''){ #change the condition inside here
        return("green")}
          }()) %>; 
      color: black"> 
  <%= value %>
  </div>
  '''
  return template

print(change_template("'A'<'B'"))

answered May 15, 2020 at 4:06

CKasper

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Comments

Daniel Walker · Accepted Answer · 2020-05-15 04:11:10Z

1

You can use the format method for strings. Here's an example.

x='hello'
y='foo {} bar'.format(x)
print(y)

This produces

foo hello bar

EDIT:

If your Python version is at least 3.6, you could also use f-strings. E.g.,

x='hello'
y=f'foo {x} bar'
print(y)

Same output.

edited May 15, 2020 at 4:11

answered May 15, 2020 at 4:02

Daniel Walker

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