python 函数习题二

一时失言乱红尘 2023-06-13 09:39 12阅读 0赞

问题

# Functions and Methods Homework #

Complete the following questions:

--------------------

**Write a function that computes the volume of a sphere given its radius.**

The volume of a sphere is given as

In \[1\]:

def vol(rad):
        pass

In \[2\]:

# Check
    vol(2)

Out\[2\]:

33.49333333333333

--------------------

**Write a function that checks whether a number is in a given range (inclusive of high and low)**

In \[3\]:

def ran_check(num,low,high):
        pass

In \[4\]:

# Check
    ran_check(5,2,7)

5 is in the range between 2 and 7

If you only wanted to return a boolean:

In \[5\]:

def ran_bool(num,low,high):
        pass

In \[6\]:

ran_bool(3,1,10)

Out\[6\]:

True

--------------------

**Write a Python function that accepts a string and calculates the number of upper case letters and lower case letters.**

Sample String : 'Hello Mr. Rogers, how are you this fine Tuesday?'
    Expected Output : 
    No. of Upper case characters : 4
    No. of Lower case Characters : 33

HINT: Two string methods that might prove useful: **.isupper()** and **.islower()**

If you feel ambitious, explore the Collections module to solve this problem!

In \[7\]:

def up_low(s):
        pass

In \[8\]:

s = 'Hello Mr. Rogers, how are you this fine Tuesday?'
    up_low(s)

Original String :  Hello Mr. Rogers, how are you this fine Tuesday?
    No. of Upper case characters :  4
    No. of Lower case Characters :  33

--------------------

**Write a Python function that takes a list and returns a new list with unique elements of the first list.**

Sample List : [1,1,1,1,2,2,3,3,3,3,4,5]
    Unique List : [1, 2, 3, 4, 5]

In \[9\]:

def unique_list(lst):
        pass

In \[10\]:

unique_list([1,1,1,1,2,2,3,3,3,3,4,5])

Out\[10\]:

[1, 2, 3, 4, 5]

--------------------

**Write a Python function to multiply all the numbers in a list.**

Sample List : [1, 2, 3, -4]
    Expected Output : -24

In \[11\]:

def multiply(numbers):  
        pass

In \[12\]:

multiply([1,2,3,-4])

Out\[12\]:

-24

--------------------

**Write a Python function that checks whether a passed in string is palindrome or not.**

Note: A palindrome is word, phrase, or sequence that reads the same backward as forward, e.g., madam or nurses run.

In \[13\]:

def palindrome(s):
        pass

In \[14\]:

palindrome('helleh')

Out\[14\]:

True

--------------------

Hard:

**Write a Python function to check whether a string is pangram or not.**

Note : Pangrams are words or sentences containing every letter of the alphabet at least once.
    For example : "The quick brown fox jumps over the lazy dog"

Hint: Look at the string module

In \[15\]:

import string
    
    def ispangram(str1, alphabet=string.ascii_lowercase):
        pass

In \[16\]:

ispangram("The quick brown fox jumps over the lazy dog")

Out\[16\]:

True

In \[17\]:

string.ascii_lowercase

Out\[17\]:

'abcdefghijklmnopqrstuvwxyz'

答案

def ran_check(num,low,high):
        return "num: %d is in the range between %d and %d"%(num,low,high) if int(num) <= int(high) and int(num) >= int(low) else print("no")
    ran_check(5,2,6)
    def up_low(s):
        s=re.split(' |,|？',s)
        s1,s2=0,0
        for i in s:
            for t in i:
                if t.isupper():
                    s1+=1
                if t.islower():
                    s2+=1
        return s1,s2
    up_low('Hello Mr. Rogers, how are you this fine Tuesday?')
    def unique_test(x):
        return np.unique(x)
    unique_test([1,1,1,1,2,2,3,3,3,3,4,5])
    def multipy(x):
        s=0
        t=x[s]
        while s<=(len(x)-2):
            t=t*x[s+1]
            s+=1
        return t
    multipy([1,2,3,-4])
    def parlindrom(x):
        x=x.replace(' ','')
        t=len(x)/2
        if str(t).isdigit():
            x1=x[t:]
            return x[0:t] == x1[::-1]
        else:
            x2=x[round(t)+1:]
            return x[0:round(t)] == x2[::-1]
    parlindrom('helleh')
    parlindrom('madam')
    parlindrom('nurses run')
    import string
    def ispangram(x):
        alphat=set('abcdefghijklmnopqrstuvwxyz')
        x=x.replace(' ','')
        x=x.lower()
        x=set(x)
        return x == alphat
    ispangram("The quick brown fox jumps over the lazy dog")