Python编程快速上手 往让繁琐工作自动化-6.6 习题

答：
‘Hello world!‘[1] = e   
‘Hello world!‘[0:5] = Hello
‘Hello world!‘[:5] = Hello
‘Hello world!‘[3:] = lo world!

‘Hello‘.upper() = HELLO
‘Hello‘.upper().isupper() = True
‘Hello‘.upper().lower() = hello

答：
‘Remember, remember, the fifth of Novermber‘.split() = [‘Remember,‘, ‘remember,‘, ‘the‘, ‘fifth‘, ‘of‘, ‘Novermber‘]
‘_‘.join(‘There can be only one.‘).split()
‘_‘.join(‘There can be only one.‘).split() = [‘T_h_e_r_e_‘, ‘_c_a_n_‘, ‘_b_e_‘, ‘_o_n_l_y_‘, ‘_o_n_e_.‘]

#!/usr/bin/env python3
# -*- coding:utf-8 -*-
# Author: davie
"""
6.7、实践项目-表格打印
    编写一个名为printTable()的函数，它接受字符串的列表的列表，将它显示在组织良好的表格中，每列
右对齐。假定所有内层列表都包含同样数目的字符串。例如，该值可能看起来像这样：
tableData = [[‘apples‘, ‘oranges‘, ‘cherries‘, ‘banana‘],
            [‘Alice‘, ‘Bob‘, ‘Carol‘, ‘David‘],
            [‘dogs‘, ‘cats‘, ‘moose‘, ‘goose‘]]

你的printTable()函数将打印出：
  apples   Alice  dogs
 oranges     Bob  cats
cherries   Carol moose
  banana   David goose

"""
tableData = [[‘apples‘, ‘oranges‘, ‘cherries‘, ‘banana‘],
            [‘Alice‘, ‘Bob‘, ‘Carol‘, ‘David‘],
            [‘dogs‘, ‘cats‘, ‘moose‘, ‘goose‘]]
def printTable(tabledata):
        len_list = [0,0,0]
        for index, item in enumerate(tableData):
                for str in item:
                        if len(str) > len_list[index]:
                                len_list[index] = len(str)
        #print(len_list)

        for seq in range(len(tableData)):
                print(tableData[0][seq].rjust(len_list[0]),
                      tableData[1][seq].rjust(len_list[1]),
                      tableData[2][seq].rjust(len_list[2])
                      )
printTable(tableData)