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</base-disclaimer-content>
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</base-disclaimer>
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#Basics
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The`range` type is commonly used in`for` loops to loop a specific number of times.`range` takes in three parameters,`start`,`stop` and`step`. Each parameter must be intergers (either built-in int or any object that implements the__index__() special method).
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If there is only one parameter, it represents the`stop` parameter. If the`step` parameter is omitted at all, it will default to`1`. If the`start` parameter is omitted, it will default to`0`.
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Ranges do support negative indices, but these are interpreted as indexing from the end of the sequence determined by the positive indices.
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***The advantage of the range type over a regular list or tuple is that a range object will always take the same (small) amount of memory, no matter the size of the range it represents
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##Input Parameters:
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Ranges implement all of the common sequence operations except concatenation and repetition (due to the fact that range objects can only represent sequences that follow a strict pattern and repetition and concatenation will usually violate that pattern).
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`start`:
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- The value of the start parameter
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- If not supplied, parameter will default to 0
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- Parameter value is_inclusive_
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`stop`
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- The value of the stop parameter
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- The only parameter that is required
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- Parameter value is_exclusive_
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`step`
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- The value of the step parameter
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- If not supplied, parameter will default to 1
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##Examples
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Range with only`stop` parameter specified
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```python
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>>>for iinrange(5):
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...print(i)
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# 4
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```
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Range with both`start` and`stop` parameters
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```python
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>>>for iinrange(1,8):
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...print(i)
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# 1
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# 2
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# 3
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# 5
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# 6
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# 7
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```
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Range with all parameters specified
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```python
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>>>for iinrange(0,30,5):
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...print(i)
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# 0
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# 5
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# 10
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# 15
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# 20
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# 25
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```
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Range with all parameters, where the`stop` parameter is not divisible by the`step` parameter
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```python
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>>>for iinrange(0,10,3):
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...print(i)
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# 0
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# 3
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# 6
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# 9
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```
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Range with all parameters, where the`stop` and`step` parameters are negative
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```python
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>>>for iinrange(0,-6,-1):
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...print(i)
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# 0
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# -1
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# -2
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# -3
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# -4
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# -5
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```
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Two examples where the`stop` parameter is set to 0