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xeze [42]
2 years ago
3

Assume that d is a Python dictionary. What does the following Python code produce? for k in d: if d[k] == v: return kSelect one:

Computers and Technology
1 answer:
elena55 [62]2 years ago
5 0

Answer:

D. a lookup

Explanation:

'Looking up' values based on keys from a dictionary is known as key look up.

A dictionary is a data structure used in Python for storing the values of several items.

A dictionary in Python is an unordered collection of items where each item is stored as a key:value pair. In dictionaries, we map an object that maps individual values with unique keys.

A lookup fetches the requested values of keys in the dictionary for operation. In the example given, a lookup is made for the key, K in dictionary, d, checking if its value is v, and returning (printing) k if the lookup is matched.

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Write a loop that outputs the numbers in a list named salaries. The outputs should be formatted in a column that is right-justif
GalinKa [24]

Answer:

Following is the loop statement in the Python programming language

salaries=[93.85967,4232.32,13343.3434] #storing the values in salaries

for k in salaries:#iterating the loop

   print("%12f"%round(k,2))# print the width of 12 and a precision of 2

   Output:

  93.860000

4232.320000

13343.340000

Explanation:

Following is the description of the statement

  • Declared a dictionary "salaries" and initialized some values into it.
  • iterating the for a loop .
  • In this for loop print the width 12 and a precision of 2 .The print statement in python will
  •  print the data with  width 12 and a precision of 2 in the console window

7 0
2 years ago
python Write a function that computes a future investment value at a given interest rate for a specified number of years. The fu
Svetlanka [38]

Answer:

def future_investment_value(investment, monthly_interest_rate, years):

  print("Years\tFuture Value")

  print("- - - - - - - - - - -")

  for i in range(1, years+1):

      future_value = investment * ((1 + monthly_interest_rate) ** (12 * i))

      print(i, "\t\t", format(future_value, ".2f"))

investment = float(input("Enter the invesment amount: "))

interest = float(input("Enter the annual interest rate: "))

year = int(input("Enter the year: "))

future_investment_value(investment, interest/1200, year)

Explanation:

Inside the function:

- In the for loop that iterates through the years, calculate the future value using the formula and print the results

Then:

- Ask the user for the investment, annual interest rate, and year

- Call the function with the given inputs

4 0
2 years ago
Define a structure type auto_t to represent an automobile. Include components for the make and model (strings), the odometer rea
yulyashka [42]

Answer:

see explaination

Explanation:

#include <stdio.h>

#include <string.h>

#define BUFSIZE 1000

struct auto_t scan_auto(char *);

struct date_t {

char day[2];

char month[2];

char year[4];

};

struct tank_t {

char tankCapacity[10];

char currentFuelLevel[10];

};

struct auto_t {

char make[50];

char model[50];

char odometerReading[10];

struct date_t manufactureDate;

struct date_t purchaseDate;

struct tank_t gasTank;

};

int main(int argc, char *argv[]) {

/* the first command-line parameter is in argv[1]

(arg[0] is the name of the program) */

FILE *fp = fopen(argv[1], "r"); /* "r" = open for reading */

char buff[BUFSIZE]; /* a buffer to hold what you read in */

struct auto_t newAuto;

/* read in one line, up to BUFSIZE-1 in length */

while(fgets(buff, BUFSIZE - 1, fp) != NULL)

{

/* buff has one line of the file, do with it what you will... */

newAuto = scan_auto(buff);

printf("%s\n", newAuto.make);

}

fclose(fp); /* close the file */

}

struct auto_t scan_auto(char *line) {

int spacesCount = 0;

int i, endOfMake, endOfModel, endOfOdometer;

for (i = 0; i < sizeof(line); i++) {

if (line[i] == ' ') {

spacesCount++;

if (spacesCount == 1) {

endOfMake = i;

}

else if (spacesCount == 2) {

endOfModel = i;

}

else if (spacesCount == 3) {

endOfOdometer = i;

}

}

}

struct auto_t newAuto;

int count = 0;

for (i = 0; i < endOfMake; i++) {

newAuto.make[count++] = line[i];

}

newAuto.make[count] = '\0';

count = 0;

for (i = endOfMake+1; i < endOfModel; i++) {

newAuto.model[count++] = line[i];

}

newAuto.model[count] = '\0';

count = 0;

for (i = endOfModel+1; i < endOfOdometer; i++) {

newAuto.odometerReading[count++] = line[i];

}

newAuto.odometerReading[count] = '\0';

return newAuto;

}

8 0
2 years ago
In an IPv4 datagram, the fragflag bit is 0, the value of HLEN is 5 (Its unit is word or 32-bits ), the value of total length is
Karolina [17]

Answer:

i aint sure

Explanation:

3 0
2 years ago
A process is moved to wait queue when I/O request is made with:_______ A. non-blocking I/O B. blocking I/O C. asynchronous I/O D
Sidana [21]

Answer:

B. blocking I/O

Explanation:

           Most of the input and output request placed  to the computer considers the blocking request. It means that the controls given cannot be returned to the given application until and unless the input/output is complete.

           Thus, blocking the input/output does not return till the input and output is complete.

            With a blocking I/O, the process is moved to a wait queue when the I/O request is made, and it moved backs to the ready queue as soon as the request is complete, thereby allowing the other processes to run in the meantime.

Thus (B) blocking I/O is the answer.

7 0
2 years ago
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