NumPy 教程目录

1 字符串比较函数

1.1 numpy.char.equal()

char.equal(x1, x2)

x1 == x2

Example：

print(np.char.equal('Blair','blair'))
print(np.char.equal('Blair','Blair'))
"""
False
True
"""

1.2 numpy.char.not_equal()

char.not_equal(x1, x2)

x1 == x2

 Example：

print(np.char.not_equal('Blair','blair'))
print(np.char.not_equal('Blair','Blair'))
"""
True
False
"""

1.3 numpy.char.greater_equal()

char.greater_equal(x1, x2)

(x1 >= x2)

Example：

print(np.char.greater_equal('Blair','blair'))
print(np.char.greater_equal('Blair','Blair'))
print(np.char.greater_equal('abc','abd'))
print(np.char.greater_equal('abc','Abd'))
"""
False
True
False
True
""" 

1.4 numpy.char.less_equal()

char.less_equal(x1, x2)

(x1 <= x2)

Example：

print(np.char.less_equal('Blair','blair'))
print(np.char.less_equal('Blair','Blair'))
print(np.char.less_equal('abc','abd'))
print(np.char.less_equal('abc','Abd'))
"""
True
True
True
False
"""

1.5 numpy.char.less()

char.less(x1, x2)

(x1 < x2)

Example：

print(np.char.less('Blair','blair'))
print(np.char.less('Blair','Blair'))
print(np.char.less('abc','abd'))
print(np.char.less('abc','Abd'))
"""
True
False
True
False
"""