Identifiers in Python: An identifier is a user-defined word for a special purpose. An identifier is a string of alphanumeric characters that begins with an alphabetic character or an underscore character that are used to represent various programming elements such as variables, functions, arrays, structures, unions and so on. A …

Generally, every programming language has syntax like the same python has its own syntax, key words, literals and identifiers. In the previous posting we learn how to execute single commands and multiple commands in shell. Now we focused on keywords in python. As we know a keyword is a reserve …

While installing, python is come up with IDLE (GUI). That means it is GUI for python developers and full form of IDLE is integrated development and learning environment. It works for both multiple line commands and single line commands execution. As the same we execute single line statements in the …

In the previous postings, we learn python is an interpreter language that means it executes line by line of code. Python comes with interactive shell known as python shell which is used to execute python coding lines or commands and the results view instantly after execution of the command. See …

Shortcuts with CTRL key combination Key Description CTRL+PgUp Switches between worksheet tabs, from left-to-right. CTRL+PgDn Switches between worksheet tabs, from right-to-left. CTRL+SHIFT+( Unhides any hidden rows within the selection. CTRL+SHIFT+) Unhides any hidden columns within the selection. CTRL+SHIFT+& Applies the outline border to the selected cells. CTRL+SHIFT_ Removes the outline …

ELECTRIC CHARGE Electric charge is a property of a matter or a substance which causes it to experience a force when placed near other matter or substance. TYPES OF ELECTRIC CHARGE There are 2 types of electric charges: Positive charge Negative charge A substance acquires charge on rubbing. When a …

LYMPHATIC SYSTEM (FOR NEET, SSC & UPSC) The lymphatic system is a part of immune system; it helps the body to fight against disease and infection. The lymphatic system includes a network of thin lymphatic vessels that branch like blood vessels into tissues throughout the body. Lymphatic system also removes …

Increase in the concentration of carbon dioxide in the air is one of the major causes of global warming. When the solar radiation fall on the earth’s surface, a part of the radiation is absorbed and a part is reflected back into the space. Green house gases like carbon dioxide …

CELL A cell is the structural and functional unit of life. It is the basic unit of life. Cell was discovered by Robert Hooke (1653) in cork, as honeycomb structure. A human being is made up of infinite number of cells that does various functions in the body. Cell Theory …

POPULATION INTERACTIONS Population is a group of individuals of the same species. An organism cannot live in isolation, interaction always occurs. This interaction can be beneficial, harmful or neutral. ‘+’ marks positive interaction, ‘-‘marks negative interaction and ‘0’ marks neutral interaction. The common interactions are: Mutualism (+, +) Competition (-, …