Support value_type of 'B' in get_tag_typecode() #1365
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# Context
If a user calls `set_tag(tag, value, value_type)` where `value_type='B'`, then the following error is raised:
```
ValueError('unsupported value_type {} in set_option'.format(typecode))
```
---------------
# Bug
Line 2512 of libcalignedsegment.pyx in the `set_tag()` function calls `get_tag_typecode(value, value_type)`.
In its current implementation, `get_tag_typecode` will always return a value of 0 (indicating an unknown type) if `value_type` is `'B'` due to `'B'` missing from the enumerated types in line 244:
```
if value_type in 'aAsSIcCZidfH':
typecode = force_bytes(value_type)[0]
```
Back in `set_tag()`, this typecode value of 0 triggers the ValueError.
-------------------
# Solution
Add `'B'` to the enumerated types in `get_tag_typecode()`.
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Context
If a user calls
set_tag(tag, value, value_type)wherevalue_type='B', then the following error is raised:This corresponds to issue #1108.
Bug
Line 2512 of libcalignedsegment.pyx in the
set_tag()function callsget_tag_typecode(value, value_type).In its current implementation,
get_tag_typecodewill always return a value of 0 (indicating an unknown type) ifvalue_typeis'B'due to'B'missing from the enumerated types:pysam/pysam/libcalignedsegment.pyx
Lines 244 to 245 in 2f9d50d
Back in
set_tag(), this typecode value of 0 triggers the ValueError.Solution
Add
'B'to the enumerated types inget_tag_typecode().