Python is a widely popular programming language extensively used in data research and software development. A Python cheat sheet might be just what you need to assist you with your Python projects. Python has garnered increased popularity in fields like data science, machine learning, and web development. Notably, applications such as BitTorrent, Dropbox, and YouTube utilize Python to achieve their functionality.
Allow me to guide you through the Python cheat sheet for Python programmers. It serves as a valuable resource for both beginners and experienced developers alike. Whether you’re starting your Python journey or looking to enhance your skills, a Python cheat sheet is an invaluable tool. Feel free to download the Python cheat sheet PDF for quick reference.
Main Python Data Types
Action
Python Cheat Sheet
Boolean
True/False
Integer
10
Float
10.01
String
“123abc”
List
[value1, value2, …]
Dictionary
{key1:value1, key2:value2, …}
Python Built-in Function
Action
Python Code
Prints x objects separated by y
print(x, sep=’y’)
Prints and waits for input that will be returned
input(s)
Returns the length of x (s, L, or D)
len(x)
Returns the minimum value in L
min(L)
Returns the maximum value in L
max(L)
Returns the sum of the values in L
sum(L)
Returns the absolute value of n
abs(n)
Returns the n1 number rounded to n digits
round(n1, n)
Python Special Characters
Action
Python Cheat Sheet
Comment
#
New line
\n
Scape char
\
Python String Operations
Action
Python Code
Retrieves character at position i
string[i]
Retrieves the last character
string[-1]
Retrieves characters in range i to j
string[i:j]
Python List Operations
Action
Python Code Cheat Sheet
Defines an empty list
list=[]
Stores x with index i
list[i]=x
Retrieves the item with index i
list[i]
Retrieves the last item
list[-1]
Retrieves items in the range i to j
list[i:j]
Removes the item with index i
del list[i]
Python Numeric Operations
Action
Python Code Cheat Sheet
Addition
+
Subtraction
–
Multiplication
*
Division
/
Exponent
**
Modules
%
Floor division
//
Python Comparison Operations
Action
Python Code Cheat Sheet
Equal
==
Different
!=
Higher
>
Lower
<
Higher or equal
>=
Lower or equal
<=
Python Dictionary & Boolean Operations
Action
Python Code
Defines an empty dictionary
dict={}
Stores x associated with keys k
dict[k] = x
Retrieves the item with keys k
dict[k]
Removes the item with keys k
del dict[k]
Logical AND
and
Logical OR
or
Logical NOT
not
Python String Methods
Action
Python Code
Converts to uppercase
string.upper()
Converts to lowercase
string.lower()
Counts how many times x appears
string.count(x)
Position of the x first occurrence
string.find(x)
Replaces x for y
string.replace(x,y)
Returns a list of values delimited by x
string.strip(x)
Returns a string with L values joined by a string
string.join(L)
Returns a string that includes formatted x
string.format(x)
Python List Methods
Action
Python Code
Adds x to the end of the list
list.append(x)
Appends L to the end of the list
list.extend(L)
Inserts x at i position
list.insert(i,x)
Removes the first list item whose value is x
list.remove(x)
Removes the item at position i and returns its value
list.pop(i)
Removes all items from the list
list.clear()
Returns a list of values delimited by x
list.index(x)
Returns a string with list values joined by an S
list.count(x)
Python Dictionary Methods
Action
Python Code
Returns a list of keys
dict.keys()
Returns a list of values
dict.values()
Returns a list of pairs
dict.items()
Returns the value associated with the keys k
dict.get(k)
Removes the item associated with the keys and returns its value
