B ‰°bã@s<dZddlmZddlmZddlmZGdd„deƒZdS)z'Chain class, used in Structure objects.é)ÚEntity)ÚIC_Chain)ÚOptionalc@s®eZdZdZdd„Zdd„Zdd„Zdd „Zd d „Zd d „Z dd„Z dd„Z dd„Z dd„Z dd„Zdd„Zdd„Zdd„Zd&edd œd!d"„Zd'eeeeed#œd$d%„ZdS)(ÚChainz‰Define Chain class. Chain is an object of type Entity, stores residues and includes a method to access atoms from residues. cCsd|_d|_t ||¡dS)zInitialize the class.ÚCN)ÚlevelÚinternal_coordrÚ__init__)ÚselfÚid©r ú,lib/python3.7/site-packages/Bio/PDB/Chain.pyr szChain.__init__cCsPt|tƒrH|jdkr"|jdkr"dS|jdkr:|jdkr:dS|j|jkSntSdS)z(Validate if id is greater than other.id.ú réN)Ú isinstancerr ÚNotImplemented)r Úotherr r r Ú__gt__s z Chain.__gt__cCsPt|tƒrH|jdkr"|jdkr"dS|jdkr:|jdkr:dS|j|jkSntSdS)z1Validate if id is greater or equal than other.id.rrrN)rrr r)r rr r r Ú__ge__*s z Chain.__ge__cCsPt|tƒrH|jdkr"|jdkr"dS|jdkr:|jdkr:dS|j|jkSntSdS)z%Validate if id is less than other.id.rrrN)rrr r)r rr r r Ú__lt__6s z Chain.__lt__cCsPt|tƒrH|jdkr"|jdkr"dS|jdkr:|jdkr:dS|j|jkSntSdS)z.Validate if id is less or equal than other id.rrrN)rrr r)r rr r r Ú__le__Bs z Chain.__le__cCst|tƒrd|df}|S)aTranslate sequence identifier to tuple form (PRIVATE). A residue id is normally a tuple (hetero flag, sequence identifier, insertion code). Since for most residues the hetero flag and the insertion code are blank (i.e. " "), you can just use the sequence identifier to index a residue in a chain. The _translate_id method translates the sequence identifier to the (" ", sequence identifier, " ") tuple. Arguments: - id - int, residue resseq r)rÚint)r r r r r Ú _translate_idNs  zChain._translate_idcCs| |¡}t ||¡S)a!Return the residue with given id. The id of a residue is (hetero flag, sequence identifier, insertion code). If id is an int, it is translated to (" ", id, " ") by the _translate_id method. Arguments: - id - (string, int, string) or int )rrÚ __getitem__)r r r r r r`s zChain.__getitem__cCs| |¡}t ||¡S)z…Check if a residue with given id is present in this chain. Arguments: - id - (string, int, string) or int )rrÚ __contains__)r r r r r rns zChain.__contains__cCs| |¡}t ||¡S)zWDelete item. Arguments: - id - (string, int, string) or int )rrÚ __delitem__)r r r r r rxs zChain.__delitem__cCs d| ¡S)zReturn the chain identifier.z )Zget_id)r r r r Ú__repr__‚szChain.__repr__cCsNg}xD| ¡D]8}| ¡dkrs