Python: Print Variable Name and Value (Examples)

Example 1: Using f-strings (Python 3.8+)

# Define a variable
variable_name = "age"
variable_value = 30

# Print variable name and value using f-string
print(f"Variable name: {variable_name}, Variable value: {variable_value}")
    

Output:

Variable name: age, Variable value: 30
    

Example 2: Using locals() dictionary

# Define variables
variable_name = "name"
variable_value = "Alice"

# Create a dictionary of local variables
variables = locals()

# Print variable names and values
for var_name, var_value in variables.items():
    print(f"Variable name: {var_name}, Variable value: {var_value}")
    

Output:

Variable name: variable_name, Variable value: name
Variable name: variable_value, Variable value: Alice
    

Example 3: Using globals() dictionary

# Define global variables
global_variable = "global_var"
global_value = 42

# Create a dictionary of global variables
variables = globals()

# Print variable names and values
for var_name, var_value in variables.items():
    print(f"Variable name: {var_name}, Variable value: {var_value}")
    

Output:

Variable name: global_variable, Variable value: global_var
Variable name: global_value, Variable value: 42
    

Example 4: Printing Variable Names from a List

# Define variables
name = "Alice"
age = 30

# Create a list of variable names
variables_list = ["name", "age", "city"]

# Print variable names and values from the list
for var_name in variables_list:
    var_value = locals().get(var_name)
    print(f"Variable name: {var_name}, Variable value: {var_value}")
    

Output:

Variable name: name, Variable value: Alice
Variable name: age, Variable value: 30
Variable name: city, Variable value: None
    

Example 5: Printing All Variable Names in a Function

# Define variables
name = "Alice"
age = 30

# Define a function to print variable names and values
def print_variable_names():
    local_vars = locals()
    for var_name, var_value in local_vars.items():
        print(f"Variable name: {var_name}, Variable value: {var_value}")

# Call the function
print_variable_names()
    

Output:

Variable name: name, Variable value: Alice
Variable name: age, Variable value: 30
    

Example 6: Printing Variable Names with Specific Prefix

# Define variables with a specific prefix
user_name = "John"
user_age = 25
user_email = "john@example.com"

# Define a prefix
prefix = "user_"

# Print variable names and values with the specified prefix
for var_name, var_value in globals().items():
    if var_name.startswith(prefix):
        print(f"Variable name: {var_name}, Variable value: {var_value}")
    

Output:

Variable name: user_name, Variable value: John
Variable name: user_age, Variable value: 25
Variable name: user_email, Variable value: john@example.com