CBSE Updates

When we compile a Python program, the python compiler converts the Python source code into another code called byte code. Byte code is a fixed set of instructions that represent different types of operations. This code can run on any Operating System and hardware. So mainly, byte code instructions are platform-independent.

The size of each byte code instruction is one byte, and thats why they are called the name byte code.

Now we need to convert the byte code to machine understandable code, which comprises 0s and 1s. This machine understandable code is called machine code.

So Python uses an interpreter called PVM (Python Virtual Machine), which understands the byte code and converts it into machine code.

After that, these machine code instructions are executed by the processor and results are displayed.

(pic: Google)

We can view the python byte code files (.pyc).

First, write a program in any text editor and save it with .py

now, compile the program using python compiler.

for example, if your file name is test.py, then use the following syntax

c:\> python test.py

To see the byte code instructions created by the python compiler before they are executed by the PVM, execute the following command.

c:\>python -m dis test.py

Here -m represents the module named dis. This module is also known as 'disassembler' that displays the byte code in the human-understandable format.

The above command will display the byte code of the test.pyc file creates during the compilation of the test.py file.

That is the way to view the byte code.

Thanks!

• Read newspaper daily. 
• Watch youtube videos on news clippings. 
• Download a short 1-minute video. 
• Write the text and try to speak in that manner. 
• Record your voice and listen. 
• Compare it with the newsreader and try to improve. Do a lot of reading. 
• Make a friend with whom you talk in English. 
• Read one article daily for 10 to 15 minutes. 
• Watch youtube for programmes like Toastmasters, Ted Talks.
• Stand in front of the mirror and give a two-minute speech every day.

Follow these tips, and you will observe a significant improvement.

Dear Students,

Final Accounts question is a very scoring question in the accountancy Paper and is also a compulsory question for most of the boards.

So here is the list of simple steps  to be follwed while solving a final Accounts sum:

1. Read the list of Trial Balance items and adjustments carefully

2. Record all the debit items given in the Trial Balance on either expenses side of Trading-P&L Account or Asset Side of Balancesheet

3. Record all the credit items given in the Trial Balance on either Income side of Trading-P&L Account or Liabilities Side of Balancesheet

4. Remember to post all the trial balance items only once, but all the adjustments items twice (one debit effect and one credit effect)

5. Balance your trading-P&L a/c first and determine profit/loss

6. Add this profit obtained with the Capital, on the liabilities side of the balance sheet

7. Take the total of the balance sheet.

Remember every debit has a corresponding credit.

Example 1:

A force of 1200 N acts on the surface of area 10 cm² normally. What would be the thrust and pressure on the surface?

Given:

Force F = 1200 N, Area A = 10 cm² = 10 ×10^-4 m² = 10^-3 m²

Thrust = Normal pressure = F = 1200 N

Pressure P = F/A 1200N10−3m21200N10−3m2
              
                      = 1.2 ×× 10⁶ N/m²

Example 2:

The elephant weighs 20,000 N stands on one foot of area 1000 cm². How much pressure would it exert on the ground?

Given:

Force applied by elephant F = 20,000 N, area A = 1000 cm² = 1000/100×100m² = 0.1 m²

The pressure is given by

Pressure P = F/A

      = 20,000N/0.1m2

        = 2,00,000 N/m².

Example 3:

Calculate the pressure produced by a force of 800 N acting on an area of 2.0 m².

Solution:

Pressure is defined as force per unit area or P = F / A
P = (800 N) / (2.0 m2
)
P = 400 N / m2
= 400 Pa

Example 4:

The pressure of a gas contained in a cylinder with a movable piston is 300 Pa. The area of the piston is 0.5 m². Calculate the force that is exerted on the piston.

Solution

Pressure is defined as force per unit area or P = F / A
We multiply both sides of the equation by the area to solve for the force as
F = P A
F = (300 Pa) (0.5 m2
)
F = 150 (Pa) m2
= 150 (N / m2
) m2
F = 150 N

Example 5:

A swimming pool of width 9.0 m and length 24.0 m is filled with water to a depth of 3.0 m. Calculate pressure on the bottom of the pool due to the water.

Solution:

The pressure due to a column of fluid is calculated as the product of the height of the fluid times
the density of the fluid times the acceleration due to gravity. For water the density is d = 1000 kg /
m3
.
? P = d h g
? P = (1000 kg / m3
) (3.0 m) (9.8 m / s2
)
? P = 29400 kg m2 / m3
s2
To simplify the units we cancel one m term in the m2
term in the numerator and one m term in
the m3
term in the denominator to get
? P = 29400 kg m / s2
m2

We know that 1N = 1 kg m / s2
so we can write
? P = 29400 N / m2
= 29400 Pa