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# Python program to convert float to exponential

• Last Updated : 23 Dec, 2020

Given a float number, the task is to write a Python program to convert float to exponential.

Examples:

```Input: 19.0
Output: 1.900000e+01

Input: 200.2
Output: 2.002000e+02

Input: 1101.02
Output: 1.101020e+03```

Approach:

• We will first declare and initialise a float number.
• Then we will use formate method to convert the number from integer to exponential type.
• Then we will print the converted value.

Syntax:

String {field_name:conversion} Example.format(value)

Errors and Exceptions:

ValueError: Error occurs during type conversion in this method.

More parameters can be included within the curly braces of our syntax. Use the format code syntax {field_name: conversion}, where field_name specifies the index number of the argument to the str.format() method, and conversion refers to the conversion code of the data type.

Example:

## Python3

 `# Python program to convert float to exponential`` ` `# Declaring the float number``float_number ``=` `1101.02`` ` `# Converting the float number to exponential number``exp_number ``=` `"{:e}"``.``format``(float_number)`` ` `# Printing the converted number``print``(``"Float Number:"``,float_number)``print``(``"Exponent Number:"``,exp_number)`

Output:

```Float Number: 1101.02
Exponent Number: 1.101020e+03```

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