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Python IDLE Shell
1. Press the Windows Key
2. Type "Python IDLE" |
How to create a new Python file
1. In the Python Shell, click File Tab
2. Click New File |
Print Statements
print("Hello")
Hello
print(4+5)
9
|
Function Definition
def name (arg1, arg2, ...):
statements
return expr |
Boolean Operators
x is y |
x not y |
x and y |
x or y |
List Operations
list.append(a) |
Append a to list |
list.insert(i, a) |
Insert a before ith item in list |
list.sort() |
Sort list |
list.pop(i) |
Remove i th item in list |
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Data Types
Integer |
-256, 15 |
String |
"Hello", "apple" |
Boolean |
True, False |
List |
[ value, ... ] |
Tuple |
( value, ... ) |
Conversion Functions
int(expr) Converts expr to integer |
str(expr) Converts expr to string |
Arithmetic Operators
x + y |
add |
x - y |
subtract |
x * y |
multiply |
x / y |
divide |
x % y |
modulus |
x ** y |
xy |
Comparators
x < y |
Less |
x <= y |
Less or equal |
x > y |
Greater |
x >= y |
Greater or equal |
x == y |
Equal |
x != y |
Not equal |
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String / List / Tuple Operations
len(s) |
length of s |
s[i] |
ith item in s (starts from 0) |
s[start : end : step ] |
slice s from start (included) to end (excluded) with increment step |
s + t |
concatenate s with t |
Statements
If Statement
if expr :
statements
elif expr :
statements
else:
statements
While Loop
while expr :
statements
For Loop
for var in collection :
statements
Counting For Loop
for i in range(start, end, step):
statements |
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