[Python知识库]Python打印条形图

Python不调包实现条形图
Python手写条形图

Python3版

def bars(values, labels=None):
    labels = labels or [str(i + 1) for i in range(len(values))]
    maximum = max(values)
    label_max_length = max(len(label) for label in labels)
    for value, label in zip(values, labels):
        length = int(value / maximum * 100)
        print('%{}s'.format(label_max_length) % label, '#' * length, value)

bars([9, 15, 22, 50])
bars([9, 45, 22, 5], ['a', 'bb', 'ccc', 'MapReduce'])

效果

兼容Python2和3的版本

#!/usr/bin/python2
# coding=utf-8

def bars(values, labels=None, scaling=100):
    """
    values: 数据列表
    labels: 标签列表
    scaling: 缩放比例
    """
    labels = labels or [str(i + 1) for i in range(len(values))]
    maximum = max(values)
    label_max_length = max(len(label) for label in labels)
    for value, label in zip(values, labels):
        length = int((scaling * value) / maximum)
        print('{} {} {}'.format('%{}s'.format(label_max_length) % label, '#' * length, value))

bars([9, 15, 22, 50])
bars([9, 45, 22, 5], ['a', 'bb', 'ccc', 'MapReduce'])