Numpy data Types Last Updated : 23 Jan, 2025 Comments Improve Suggest changes Like Article Like Report NumPy is a powerful Python library that can manage different types of data. Here we will explore the Datatypes in NumPy and How we can check and create datatypes of the NumPy array. DataTypes in NumPyA data type in NumPy is used to specify the type of data stored in a variable. Here is the list of characters available in NumPy to represent data types.CharacterMeaningbBooleanfFloatmTime DeltaOObjectUUnicode StringiIntegeruUnsigned IntegercComplex FloatMDateTimeSStringVA fixed chunk of memory for other types (void)The list of various types of data types provided by NumPy are given below:Data TypeDescriptionbool_Boolean int_Default integer type (int64 or int32)intcIdentical to the integer in C (int32 or int64)intpInteger value used for indexingint88-bit integer value (-128 to 127)int1616-bit integer value (-32768 to 32767)int3232-bit integer value (-2147483648 to 2147483647)int6464-bit integer value (-9223372036854775808 to 9223372036854775807)uint8Unsigned 8-bit integer value (0 to 255)uint16Unsigned 16-bit integer value (0 to 65535)uint32Unsigned 32-bit integer value (0 to 4294967295)uint64Unsigned 64-bit integer value (0 to 18446744073709551615)float_Float valuesfloat16Half precision float valuesfloat32Single-precision float valuesfloat64Double-precision float valuescomplex_Complex valuescomplex64Represent two 32-bit float complex values (real and imaginary)complex128Represent two 64-bit float complex values (real and imaginary)Checking the Data Type of NumPy ArrayWe can check the datatype of Numpy array by using dtype. Then it returns the data type all the elements in the array. Python import numpy as np # Create a NumPy array arr = np.array([1, 2, 3, 4, 5]) # Check the data type of the array data_type = arr.dtype print(data_type) Outputint64 Create Arrays With a Defined Data TypeWe can create an array with a defined data type by specifying "dtype" attribute in numpy.array() method while initializing an array. Python import numpy as np arr1 = np.array([1, 2, 3, 4], dtype=np.float64) # Creating a 3x3 int32 array of zeros arr2 = np.zeros((3, 3), dtype=np.int32) # Creating a 2x2 complex128 array of ones arr3 = np.ones((2, 2), dtype=np.complex128) # Creating a 1D bool array arr4 = np.empty((4,), dtype=np.bool_) # Print the arrays and their data types print(arr1.dtype) print(arr2.dtype) print(arr3.dtype) print(arr4.dtype) Outputfloat64 int32 complex128 bool Convert Data Type of NumPy ArraysWe can convert data type of an arrays from one type to another using astype() function. Python import numpy as np arr1 = np.array([1.2, 2.5, 3.7]) # Converting to int32 arr2 = arr1.astype(np.int32) # Print new array and its type print(arr2) print(arr2.dtype) Output[1 2 3] int32 Comment More infoAdvertise with us Next Article Numpy data Types sagar99 Follow Improve Article Tags : Python Numpy Python-numpy Practice Tags : python Similar Reads Lua Data Types In Lua, data types define the kind of values a variable can hold. Since Lua is a dynamically typed language, variables can change their types during execution, which provides flexibility but requires careful management.What are Data Types in Lua Programming Language?In Lua, variables don't have fixe 6 min read Python Data Types Python Data types are the classification or categorization of data items. It represents the kind of value that tells what operations can be performed on a particular data. 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