python如何以表格形式打印输出的方法示例

#!/usr/bin/python
# -*- coding: utf-8 -*-

import time
import json

# 数据项
timingInfo = [{
  'url': 'https://aaa.bbb.net/ccc/article/details/11',
  'duration(ms)': 121.12,
  'start(ms)': 222,
  'type': 'html',
  'size(kb)': 22.01
}, {
  'url': '/nd-element-in-list-to-another-list-of-strings',
  'duration(ms)': 121.22,
  'start(ms)': 3332,
  'type': 'css',
  'size(kb)': 22.01
}, {
  'url': '/path2',
  'duration(ms)': '121.12434234 (1212312.12 + 121212)',
  'start(ms)': 3332,
  'type': 'css',
  'size(kb)': 22.01
}, {
  'url': '/nd-element-in-list-to-another-list-of-strings',
  'duration(ms)': 121.42323423423,
  'start(ms)': 3332,
  'type': 'css',
  'size(kb)': 22.01
}, {
  'url': 'path2',
  'duration(ms)': '121.11 (111.11 + 20)',
  'start(ms)': 3332,
  'type': 'css',
  'size(kb)': 22.01
}]

# 提取表头
keyHeader = timingInfo[0].keys()
# 存放每列的最大长度
keyMaxLen = {}

for item in timingInfo:
  for i,h in enumerate(keyHeader):
    # 计算每个属性对应的最大长度
    maxLen = max(len(h), len(str(item[h])))
    if keyMaxLen.get(h, None):
      maxLen = max(maxLen, keyMaxLen[h])
    keyMaxLen[h] = maxLen

print keyMaxLen

#
def printGroup(group):
  for item in group:
    print '\r'
    for i,h in enumerate(keyHeader):
      itemLen = keyMaxLen.get(h, str(h)) + 4
      # 补空位并居中
      s = str(item[h]).center(itemLen, '-' if item[h] == '-' else ' ')

      icon = '|'
      if item[h] == '-':
        icon = '+'

      s = (icon if i == 0 else '') + s[1:len(s)] + icon
      print s,

  print '\r'

print '\n[timing info]'

# 占位项
tag = {}
for i,h in enumerate(keyHeader):
  tag[h] = '-'
# 前后添上
timingInfo.insert(0, tag)
timingInfo.append(tag)

# 第一行需要先单独打印出来
printGroup([tag])

# 再单独打印表头
for i,h in enumerate(keyHeader):
  # 留空位4
  itemLen = keyMaxLen.get(h, str(h)) + 4
  # 快捷居中并补空位 左对齐可使用 ljust之类
  s = h.center(itemLen)
  s = ('|' if i == 0 else '') + s[1:len(s)] + '|'
  print s,

# 打印后面的数据项，包括两条 --+--占位
printGroup(timingInfo)

import prettytable as pt

# tb = pt.PrettyTable( ["City name", "Area", "Population", "Annual Rainfall"])
tb = pt.PrettyTable()
tb.field_names = ["City name", "Area", "Population", "Annual Rainfall"]
tb.add_row(["Adelaide",1295, 1158259, 600.5])
tb.add_row(["Brifasdfae",5905, 1857594, 1146.4])
tb.add_row(["Darwin", 112, 120900, 171423423423423424.7])
tb.add_row(["Hobart", 1357, 205556,619.5])

print(tb)