Python Refresher

Back to basics

Variables

two = 2
some_number = 10000

# Booleans
true_boolean = True
false_boolean = False

# String
my_name = "This is a string"

# Float
book_price = 15.80

Control Flow

if 2 > 1:
    print("2 is greater than 1")
elif:
    print("1 is not greater than 2")
else:
    print("1 is equal to 2")

Loops

# While :
loop_condition = True

while loop_condition:
    print("Loop Condition keeps: %s" %(loop_condition))
    loop_condition = False


# For :
for i in range(1, 11):
    print(i)

for item in list:
    print(item)

Lists

programming_languages = ["Python", "C", "Rust", "Java", "Go"]
# Index are like this :     0       1     2       3      4

print(programming_languages[2])             # Displays "Rust"


# Let's add some variables to the list
programming_languages.append("JavaScript")  # Adds JS to the list above
one_more = "Kotlin"                         
programming_languages.append(one_more)      # Adds Kotlin to the list

print(programming_languages[6])             # Displays "Kotlin"

Dictionaries

dictionary_example = {
    "key1": "value1",
    "key2": 2,
    3: "val3"
}

print("The first value is %s" %(dictionary_example["key1"]))    
        # Displays value of key1
print("The second value is " + str(dictionary_example["key2"])) 
            # Displays value of key2
print("The second value is " + dictionary_example[3])           
        # Displays value of key3

dictionary_example['keyFour'] = "v4"                            
        # Adds keyFour as the 4th key, with value or "v4"
print(dictionary_example)                                       
        # Displays whole dictionary

# Display dictionary :
for key, value in dictionary.items():
    print("%s takes the value %s" %(key, value)) 
        # key_n takes the value value_n