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Merge pull request #179 from nitish770/master

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python.md Incorrect Keywords fixed
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Julien Le Coupanec 2021-03-16 15:16:24 +01:00 committed by GitHub
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@ -12,9 +12,9 @@
* We can run a python file by the following command in cmd(Windows) or shell(mac/linux). * We can run a python file by the following command in cmd(Windows) or shell(mac/linux).
`python <filename.py>` `$ python <filename.py>` or `$ python3 <filename.py>`
#### By default, the python doesn't require any imports to run a python file. #### By default, python doesn't require any imports to run a python file.
## Create and execute a program ## Create and execute a program
@ -42,24 +42,45 @@
## Keywords ## Keywords
<br> <br>
| Keyword | Description | - As of python3.8 there are 35 keywords
| --------- | ----------- |
| break | used to exit loop and used to exit| | Keyword | Description | Category |
| char | basic declaration of a type character | |---------- | ---------- | --------- |
| const | prefix declaration meaning variable can not be changed| | True | Boolean value for not False or 1 | Value Keyword|
| continue | go to bottom of loop in for, while loops| | False | Boolean Value for not True or 0 | Value Keyword |
| class | to define a class| | None | No Value | Value keyword |
| def | to define a function| | and | returns true if both (oprand) are true (other language && ) | Operator keyword |
| elif | shortcut for (else if) used in else if ladder | | or | returns true of either operands is true (other language || ) | Operator keyword |
| else | executable statement, part of "if" structure | | in | returns true if word is in iterator | Operator keyword |
| float | basic declaration of floating point| | is | returns true if id of variables are same | Operator keyword |
| for | executable statement, for loop| | not | returns opposite Boolean value | Operator Keyword |
| from | executable statement, used to import only specific objects from a package| | if | get into block if expression is true | conditional |
| if | executable statement| | elif | for more than 1 if checks | conditional |
| import | to import modules| | else | this block will be executed if condition is false | conditional |
|pass| keyword to specify noting is happening in the codeblock, generally used in classes| | for | used for looping | iteration |
|return | executable statement with or without a value| | while | used for looping | iteration |
|while| executable statement, while loop| | break | get out of loop | iteration |
| continue | skip for specific condition | iteration |
| def | make user defined function | structure |
| class | make user defined classes | structure |
| lambda | make anonymous function | structure |
| with | execute code within context manager's scope | structure |
| as | alias for something | structure |
| pass | used for making empty structures(declaration) | structure |
| return | get value(s) from function, get out of function | returning keyword |
| yield | yields values instead of returning (are called generators) | returning keyword |
| import | import libraries/modules/packages | import |
| from | import specific function/classes from modules/packages | import |
| try | this block will be tried to get executed | execption handling |
| execpt | is any execption/error has occured it'll be executed | execption handling |
| finally | It'll be executed no matter execption occurs or not | execption handling |
| raise | thros any specific error/execption | execption handling |
| assert | throws an AssertionError if condition is false | execption handling |
| async | used to define asynchronous functions/co-routines | asynchronous programming |
| await | used to specify a point when control is taken back | asynchronous programming |
| del | deletes/unsets any user defined data | variable handling |
| global | used to access variables defined outsied of function | variable handling |
| nonlocal | modify variables from different scopes | variable handling |
<br> <br>
## Operators ## Operators
@ -79,8 +100,8 @@
| % | modulo, a % b | | % | modulo, a % b |
| \+ | add, a + b | | \+ | add, a + b |
| \- | subtract, a - b | | \- | subtract, a - b |
| << | shift left, left operand is shifted left by right operand bits | | << | shift left, left operand is shifted left by right operand bits (multiply by 2) |
| \>> | shift right, left operand is shifted right by right operand bits| | \>> | shift right, left operand is shifted right by right operand bits (divide by 2) |
| < | less than, result is true or false, a %lt; b | < | less than, result is true or false, a %lt; b
| <= | less than or equal, result is true or false, a <= b | <= | less than or equal, result is true or false, a <= b
| \> | greater than, result is true or false, a > b | \> | greater than, result is true or false, a > b