Write a NumPy program to convert a Python dictionary to a Numpy ndarray
- برمجة بايثون
- 2021-09-13
- mhanasmh00489829403
الأجوبة
import numpy as np
from ast import literal_eval
udict = """{"column0":{"a":1,"b":0.0,"c":0.0,"d":2.0},
"column1":{"a":3.0,"b":1,"c":0.0,"d":-1.0},
"column2":{"a":4,"b":1,"c":5.0,"d":-1.0},
"column3":{"a":3.0,"b":-1.0,"c":-1.0,"d":-1.0}
}"""
t = literal_eval(udict)
print("\nOriginal dictionary:")
print(t)
print("Type: ",type(t))
result_nparra = np.array([[v[j] for j in ['a', 'b', 'c', 'd']] for k, v in t.items()])
print("\nndarray:")
print(result_nparra)
print("Type: ",type(result_nparra))Sample Output:
Original dictionary:
{'column0': {'a': 1, 'b': 0.0, 'c': 0.0, 'd': 2.0},
'column1': {'a': 3.0, 'b': 1, 'c': 0.0, 'd': -1.0},
'column2': {'a': 4, 'b': 1, 'c': 5.0, 'd': -1.0},
'column3': {'a': 3.0, 'b': -1.0, 'c': -1.0, 'd': -1.0}}
Type: <class 'dict'>
ndarray:
[[ 1. 0. 0. 2.]
[ 3. 1. 0. -1.]
[ 4. 1. 5. -1.]
[ 3. -1. -1. -1.]]
Type: <class 'numpy.ndarray'>أسئلة مشابهة
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