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### `tf.digamma(x, name=None)` {#digamma}
Computes Psi, the derivative of Lgamma (the log of the absolute value of
`Gamma(x)`), element-wise.
##### Args:
* <b>`x`</b>: A `Tensor`. Must be one of the following types: `half`, `float32`, `float64`.
* <b>`name`</b>: A name for the operation (optional).
##### Returns:
A `Tensor`. Has the same type as `x`.
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