def _():
assert bf.frequency([1, 1.0, '1', '1.0'], cast=False) == {
1: 1,
1.0: 1,
'1': 1,
'1.0': 1
}
def graph_frequency_histogram(arr,
bar_color='green',
title='Graph of Frequencies'):
"""
This function generates a graph of the frequencies of the elements in the input array, arr
This function utilizes matplotlib and will produce errors if the package is not installed
To install matplotlib, use 'pip install matplotlib'
"""
plt.style.use('ggplot')
dictionary = bf.frequency(arr)
keys = dictionary.keys()
values = [dictionary[i] for i in keys]
x_pos = [i for i in range(len(keys))]
plt.bar(x_pos, values, color=bar_color)
plt.title(title)
plt.xticks(x_pos, keys)
plt.show()
def _():
assert bf.frequency([1, 1.0, '1', '1.0'], cast=True) == {1.0: 4}
def _():
assert bf.frequency([1, 2]) == {1: 1, 2: 1}
def _():
assert bf.frequency([1, 1]) == {1: 2}
def _():
assert bf.frequency([]) == {}