write a code that takes in three ints and write 'equal' if all three are equal and 'not equal' otherwise.
write a code that takes in three ints and write 'equal' if all three are equal and 'not equal' otherwise.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
I'm trying to write a code that takes in three ints and write 'equal' if all three are equal and 'not equal' otherwise. I want 3 3 3 to print equal and 3 2 3 print not equal.
![This section covers a Python script designed to compare three values.
**Python Code Explanation:**
The script begins by importing the `sys` module, which allows for command-line arguments:
```python
import sys
```
Variables `a`, `b`, and `c` are intended to hold integer values converted from command-line arguments:
```python
a = int(sys.argv[3])
b = int(sys.argv[3])
c = int(sys.argv[3])
```
**Logical Conditions:**
1. **Comparing `a` and `b`:**
- If `a` is equal to `b`, the script prints "equal".
- Otherwise, it prints "not equal":
```python
if a == b:
print("equal")
else:
print("not equal")
```
2. **Comparing `b` and `c`:**
- Similarly, if `b` is equal to `c`, it prints "equal".
- Otherwise, it prints "not equal":
```python
if b == c:
print("equal")
else:
print("not equal")
```
**Error Handling:**
The console area shows an error from the last attempted run:
```
Traceback (most recent call last):
File "comparethree.py", line 3, in <module>
a = int(sys.argv[3])
IndexError: list index out of range
```
**Explanation of the Error:**
- The `IndexError: list index out of range` occurs because the script tried to access a fourth command-line argument (`sys.argv[3]`), but fewer arguments were provided.
- To fix this, ensure that enough arguments are passed when executing the script from the command line.
**Conclusion:**
This script compares three values using command-line inputs. Correct input management and error handling are essential to prevent runtime errors like `IndexError`.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd5d13b00-4d70-4086-b77e-051af52fd49d%2Fd1e69f38-3358-4454-bdd4-1cedfae67985%2Ffncaugl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:This section covers a Python script designed to compare three values.
**Python Code Explanation:**
The script begins by importing the `sys` module, which allows for command-line arguments:
```python
import sys
```
Variables `a`, `b`, and `c` are intended to hold integer values converted from command-line arguments:
```python
a = int(sys.argv[3])
b = int(sys.argv[3])
c = int(sys.argv[3])
```
**Logical Conditions:**
1. **Comparing `a` and `b`:**
- If `a` is equal to `b`, the script prints "equal".
- Otherwise, it prints "not equal":
```python
if a == b:
print("equal")
else:
print("not equal")
```
2. **Comparing `b` and `c`:**
- Similarly, if `b` is equal to `c`, it prints "equal".
- Otherwise, it prints "not equal":
```python
if b == c:
print("equal")
else:
print("not equal")
```
**Error Handling:**
The console area shows an error from the last attempted run:
```
Traceback (most recent call last):
File "comparethree.py", line 3, in <module>
a = int(sys.argv[3])
IndexError: list index out of range
```
**Explanation of the Error:**
- The `IndexError: list index out of range` occurs because the script tried to access a fourth command-line argument (`sys.argv[3]`), but fewer arguments were provided.
- To fix this, ensure that enough arguments are passed when executing the script from the command line.
**Conclusion:**
This script compares three values using command-line inputs. Correct input management and error handling are essential to prevent runtime errors like `IndexError`.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Command Line Arguments in Python:
Command Line Arguments: The arguments given after the name of the program in the command line shell of the operating system.
Using sys.argv, one can deal with the CLAs.
- len(sys.argv) - It gives us the number/ the count of the CLAs.
- sys.argv[0] - It is the name of the current Python script.
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