# Python sympy | sieve.totientrange() method

With the help of sympy.sieve.totientrange() method, we can generate all totient numbers for a given range [a, b). It returns a type generator object which can be converted to a list for further operations.

Syntax: sieve.totientrange(a, b)
Parameters:
a – It denotes the start of the range. It is inclusive.
b – It denotes the end of the range. It is not inclusive.
Returns: The method returns a type generator object.

Example #1:

 `# import sympy  ` `from` `sympy ``import` `sieve ` ` `  `# Use sieve.totientrange() method  ` `totient_gen ``=` `sieve.totientrange(``1``, ``10``)  ` `totient_list ``=` `list``(totient_gen) ` `     `  `print``(``"Totient numbers for the range of numbers [1, 10) : {}"``.``format``(totient_list))   `

Output:

```Totient numbers for the range of numbers [1, 10) : [1, 1, 2, 2, 4, 2, 6, 4, 6]
```

Example #2:

 `# import sympy  ` `from` `sympy ``import` `sieve ` ` `  `# Use sieve.totientrange() method  ` `totient_gen ``=` `sieve.totientrange(``8``, ``20``)  ` `totient_list ``=` `list``(totient_gen) ` `     `  `print``(``"Totient numbers for the range of numbers [8, 20) : {}"``.``format``(totient_list))       `

Output:

```Totient numbers for the range of numbers [8, 20) : [4, 6, 4, 10, 4, 12, 6, 8, 8, 16, 6, 18]
```

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