Task08模块与datetime模块

模块与datetime模块

15.模块

练习

1. 怎么查出通过 from xx import xx导⼊的可以直接调⽤的⽅法？
   通过查看该模块的文档doc，使用方法如下：

from xx import xx
print(xx.__doc__)

或者用help语句

from xx import xx
help(xx.xx)

2. 了解Collection模块，编写程序以查询给定列表中最常见的元素。

题目说明：

输入：language = [‘PHP’, ‘PHP’, ‘Python’, ‘PHP’, ‘Python’, ‘JS’, ‘Python’, ‘Python’,‘PHP’, ‘Python’]

输出：Python

"""
Input file
language = ['PHP', 'PHP', 'Python', 'PHP', 'Python', 'JS', 'Python', 'Python','PHP', 'Python']
   
Output file
Python
"""
def most_element(language):
    """ Return a list of lines after inserting a word in a specific line. """
   
    # your code here

模块如下：

#Collection模块
def most_element(language):
    """ Return a list of lines after inserting a word in a specific line. """
    m = 0
    n = 0
    for i in language[0:len(language)]:
        for j in language[0:len(language)]:
            if i == j :
                m += 1
        if m >= n :
            n = m
            shuchu = i
    return shuchu

调用Collection模块

from Collection import most_element
language = ['PHP', 'PHP', 'Python', 'PHP', 'Python', 'JS', 'Python', 'Python','PHP', 'Python']
print(most_element(language))

---

16.datetime模块

练习

1、假设你获取了用户输入的日期和时间如2020-1-21 9:01:30，以及一个时区信息如UTC+5:00，均是str，请编写一个函数将其转换为timestamp：

题目说明:

"""
   
Input file
example1: dt_str='2020-6-1 08:10:30', tz_str='UTC+7:00'
example2: dt_str='2020-5-31 16:10:30', tz_str='UTC-09:00'
   
Output file
result1: 1590973830.0
result2: 1590973830.0
"""
   
   
def to_timestamp(dt_str, tz_str):
    # your code here
        pass

2、编写Python程序以选择指定年份的所有星期日。

题目说明:

"""
   
Input file
   2020
   
Output file
   2020-01-05                         
   2020-01-12              
   2020-01-19                
   2020-01-26               
   2020-02-02     
   -----
   2020-12-06               
   2020-12-13                
   2020-12-20                
   2020-12-27 
"""
   
def all_sundays(year):
    # your code here