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Help on built-in module array: NAME array DESCRIPTION This module defines an object type which can efficiently represent an array of basic values: characters, integers, floating point numbers. Arrays are sequence types and behave very much like lists, except that the type of objects stored in them is constrained. CLASSES builtins.object array ArrayType = class array(builtins.object) | array(typecode [, initializer]) -> array | | Return a new array whose items are restricted by typecode, and | initialized from the optional initializer value, which must be a list, | string or iterable over elements of the appropriate type. | | Arrays represent basic values and behave very much like lists, except | the type of objects stored in them is constrained. The type is specified | at object creation time by using a type code, which is a single character. | The following type codes are defined: | | Type code C Type Minimum size in bytes | 'b' signed integer 1 | 'B' unsigned integer 1 | 'u' Unicode character 2 (see note) | 'h' signed integer 2 | 'H' unsigned integer 2 | 'i' signed integer 2 | 'I' unsigned integer 2 | 'l' signed integer 4 | 'L' unsigned integer 4 | 'q' signed integer 8 (see note) | 'Q' unsigned integer 8 (see note) | 'f' floating point 4 | 'd' floating point 8 | | NOTE: The 'u' typecode corresponds to Python's unicode character. On | narrow builds this is 2-bytes on wide builds this is 4-bytes. | | NOTE: The 'q' and 'Q' type codes are only available if the platform | C compiler used to build Python supports 'long long', or, on Windows, | '__int64'. | | Methods: | | append() -- append a new item to the end of the array | buffer_info() -- return information giving the current memory info | byteswap() -- byteswap all the items of the array | count() -- return number of occurrences of an object | extend() -- extend array by appending multiple elements from an iterable | fromfile() -- read items from a file object | fromlist() -- append items from the list | frombytes() -- append items from the string | index() -- return index of first occurrence of an object | insert() -- insert a new item into the array at a provided position | pop() -- remove and return item (default last) | remove() -- remove first occurrence of an object | reverse() -- reverse the order of the items in the array | tofile() -- write all items to a file object | tolist() -- return the array converted to an ordinary list | tobytes() -- return the array converted to a string | | Attributes: | | typecode -- the typecode character used to create the array | itemsize -- the length in bytes of one array item | | Methods defined here: | | __add__(self, value, /) | Return self+value. | | __contains__(self, key, /) | Return key in self. | | __copy__(self, /) | Return a copy of the array. | | __deepcopy__(self, unused, /) | Return a copy of the array. | | __delitem__(self, key, /) | Delete self[key]. | | __eq__(self, value, /) | Return self==value. | | __ge__(self, value, /) | Return self>=value. | | __getattribute__(self, name, /) | Return getattr(self, name). | | __getitem__(self, key, /) | Return self[key]. | | __gt__(self, value, /) | Return self>value. | | __iadd__(self, value, /) | Implement self+=value. | | __imul__(self, value, /) | Implement self*=value. | | __iter__(self, /) | Implement iter(self). | | __le__(self, value, /) | Return self<=value. | | __len__(self, /) | Return len(self). | | __lt__(self, value, /) | Return self<value. | | __mul__(self, value, /) | Return self*value. | | __ne__(self, value, /) | Return self!=value. | | __reduce_ex__(self, value, /) | Return state information for pickling. | | __repr__(self, /) | Return repr(self). | | __rmul__(self, value, /) | Return value*self. | | __setitem__(self, key, value, /) | Set self[key] to value. | | __sizeof__(self, /) | Size of the array in memory, in bytes. | | append(self, v, /) | Append new value v to the end of the array. | | buffer_info(self, /) | Return a tuple (address, length) giving the current memory address and the length in items of the buffer used to hold array's contents. | | The length should be multiplied by the itemsize attribute to calculate | the buffer length in bytes. | | byteswap(self, /) | Byteswap all items of the array. | | If the items in the array are not 1, 2, 4, or 8 bytes in size, RuntimeError is | raised. | | count(self, v, /) | Return number of occurrences of v in the array. | | extend(self, bb, /) | Append items to the end of the array. | | frombytes(self, buffer, /) | Appends items from the string, interpreting it as an array of machine values, as if it had been read from a file using the fromfile() method. | | fromfile(self, f, n, /) | Read n objects from the file object f and append them to the end of the array. | | fromlist(self, list, /) | Append items to array from list. | | fromunicode(self, ustr, /) | Extends this array with data from the unicode string ustr. | | The array must be a unicode type array; otherwise a ValueError is raised. | Use array.frombytes(ustr.encode(...)) to append Unicode data to an array of | some other type. | | index(self, v, start=0, stop=9223372036854775807, /) | Return index of first occurrence of v in the array. | | Raise ValueError if the value is not present. | | insert(self, i, v, /) | Insert a new item v into the array before position i. | | pop(self, i=-1, /) | Return the i-th element and delete it from the array. | | i defaults to -1. | | remove(self, v, /) | Remove the first occurrence of v in the array. | | reverse(self, /) | Reverse the order of the items in the array. | | tobytes(self, /) | Convert the array to an array of machine values and return the bytes representation. | | tofile(self, f, /) | Write all items (as machine values) to the file object f. | | tolist(self, /) | Convert array to an ordinary list with the same items. | | tounicode(self, /) | Extends this array with data from the unicode string ustr. | | Convert the array to a unicode string. The array must be a unicode type array; | otherwise a ValueError is raised. Use array.tobytes().decode() to obtain a | unicode string from an array of some other type. | | ---------------------------------------------------------------------- | Static methods defined here: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | itemsize | the size, in bytes, of one array item | | typecode | the typecode character used to create the array | | ---------------------------------------------------------------------- | Data and other attributes defined here: | | __hash__ = None class array(builtins.object) | array(typecode [, initializer]) -> array | | Return a new array whose items are restricted by typecode, and | initialized from the optional initializer value, which must be a list, | string or iterable over elements of the appropriate type. | | Arrays represent basic values and behave very much like lists, except | the type of objects stored in them is constrained. The type is specified | at object creation time by using a type code, which is a single character. | The following type codes are defined: | | Type code C Type Minimum size in bytes | 'b' signed integer 1 | 'B' unsigned integer 1 | 'u' Unicode character 2 (see note) | 'h' signed integer 2 | 'H' unsigned integer 2 | 'i' signed integer 2 | 'I' unsigned integer 2 | 'l' signed integer 4 | 'L' unsigned integer 4 | 'q' signed integer 8 (see note) | 'Q' unsigned integer 8 (see note) | 'f' floating point 4 | 'd' floating point 8 | | NOTE: The 'u' typecode corresponds to Python's unicode character. On | narrow builds this is 2-bytes on wide builds this is 4-bytes. | | NOTE: The 'q' and 'Q' type codes are only available if the platform | C compiler used to build Python supports 'long long', or, on Windows, | '__int64'. | | Methods: | | append() -- append a new item to the end of the array | buffer_info() -- return information giving the current memory info | byteswap() -- byteswap all the items of the array | count() -- return number of occurrences of an object | extend() -- extend array by appending multiple elements from an iterable | fromfile() -- read items from a file object | fromlist() -- append items from the list | frombytes() -- append items from the string | index() -- return index of first occurrence of an object | insert() -- insert a new item into the array at a provided position | pop() -- remove and return item (default last) | remove() -- remove first occurrence of an object | reverse() -- reverse the order of the items in the array | tofile() -- write all items to a file object | tolist() -- return the array converted to an ordinary list | tobytes() -- return the array converted to a string | | Attributes: | | typecode -- the typecode character used to create the array | itemsize -- the length in bytes of one array item | | Methods defined here: | | __add__(self, value, /) | Return self+value. | | __contains__(self, key, /) | Return key in self. | | __copy__(self, /) | Return a copy of the array. | | __deepcopy__(self, unused, /) | Return a copy of the array. | | __delitem__(self, key, /) | Delete self[key]. | | __eq__(self, value, /) | Return self==value. | | __ge__(self, value, /) | Return self>=value. | | __getattribute__(self, name, /) | Return getattr(self, name). | | __getitem__(self, key, /) | Return self[key]. | | __gt__(self, value, /) | Return self>value. | | __iadd__(self, value, /) | Implement self+=value. | | __imul__(self, value, /) | Implement self*=value. | | __iter__(self, /) | Implement iter(self). | | __le__(self, value, /) | Return self<=value. | | __len__(self, /) | Return len(self). | | __lt__(self, value, /) | Return self<value. | | __mul__(self, value, /) | Return self*value. | | __ne__(self, value, /) | Return self!=value. | | __reduce_ex__(self, value, /) | Return state information for pickling. | | __repr__(self, /) | Return repr(self). | | __rmul__(self, value, /) | Return value*self. | | __setitem__(self, key, value, /) | Set self[key] to value. | | __sizeof__(self, /) | Size of the array in memory, in bytes. | | append(self, v, /) | Append new value v to the end of the array. | | buffer_info(self, /) | Return a tuple (address, length) giving the current memory address and the length in items of the buffer used to hold array's contents. | | The length should be multiplied by the itemsize attribute to calculate | the buffer length in bytes. | | byteswap(self, /) | Byteswap all items of the array. | | If the items in the array are not 1, 2, 4, or 8 bytes in size, RuntimeError is | raised. | | count(self, v, /) | Return number of occurrences of v in the array. | | extend(self, bb, /) | Append items to the end of the array. | | frombytes(self, buffer, /) | Appends items from the string, interpreting it as an array of machine values, as if it had been read from a file using the fromfile() method. | | fromfile(self, f, n, /) | Read n objects from the file object f and append them to the end of the array. | | fromlist(self, list, /) | Append items to array from list. | | fromunicode(self, ustr, /) | Extends this array with data from the unicode string ustr. | | The array must be a unicode type array; otherwise a ValueError is raised. | Use array.frombytes(ustr.encode(...)) to append Unicode data to an array of | some other type. | | index(self, v, start=0, stop=9223372036854775807, /) | Return index of first occurrence of v in the array. | | Raise ValueError if the value is not present. | | insert(self, i, v, /) | Insert a new item v into the array before position i. | | pop(self, i=-1, /) | Return the i-th element and delete it from the array. | | i defaults to -1. | | remove(self, v, /) | Remove the first occurrence of v in the array. | | reverse(self, /) | Reverse the order of the items in the array. | | tobytes(self, /) | Convert the array to an array of machine values and return the bytes representation. | | tofile(self, f, /) | Write all items (as machine values) to the file object f. | | tolist(self, /) | Convert array to an ordinary list with the same items. | | tounicode(self, /) | Extends this array with data from the unicode string ustr. | | Convert the array to a unicode string. The array must be a unicode type array; | otherwise a ValueError is raised. Use array.tobytes().decode() to obtain a | unicode string from an array of some other type. | | ---------------------------------------------------------------------- | Static methods defined here: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | itemsize | the size, in bytes, of one array item | | typecode | the typecode character used to create the array | | ---------------------------------------------------------------------- | Data and other attributes defined here: | | __hash__ = None DATA typecodes = 'bBuhHiIlLqQfd' FILE (built-in)
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