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tf.strings.lower
Converts all uppercase characters into their respective lowercase replacements.
tf.strings.lower(
    input, encoding='', name=None
)
  Example:
tf.strings.lower("CamelCase string and ALL CAPS")
<tf.Tensor: shape=(), dtype=string, numpy=b'camelcase string and all caps'>
  | Args | |
|---|---|
input | 
      A Tensor of type string. | 
     
encoding | 
      An optional string. Defaults to "". | 
     
name | 
      A name for the operation (optional). | 
| Returns | |
|---|---|
A Tensor of type string. | 
     
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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
 https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/strings/lower