True

How it works

Use a Boolean name such as is_ready to describe a yes/no state. A comparison such as count > 0 calculates that state from data. The bool() function explicitly converts a value using its truth-value rules.

True must have a capital T. The string "True" is text, not a Boolean; it is truthy because it is nonempty. bool is a subclass of int, so True == 1, but this does not mean True is the same object as the integer 1.

while True starts an unconditional repetition. A reachable break, return or exception must end it if it is not intended to run forever. Terminal input examples need a console; they are not browser prompt demonstrations.

Common mistakes and boundaries

Write if is_ready when you mean truthiness. Comparing == True can exclude truthy objects that are not equal to True.

A simple shape check on text is not a complete security validation. The email example deliberately demonstrates Boolean combination only; it does not establish deliverability or safe registration.

Try it yourself

Compare True, 1, "True", "False" and "" using bool(). Explain why both nonempty strings are truthy even though their words disagree.

• False
• Comparison & Logical Operators
• if

Syntax

True

Examples

is_authenticated = True
feature_enabled = True

if is_authenticated:
    print("User is logged in")

if feature_enabled:
    print("Feature is active")

age = 25
is_adult = age >= 18  # Evaluates to True

if is_adult:
    print("Access granted")
else:
    print("Access denied")

# Multiple conditions
has_permission = True
is_verified = True

if has_permission and is_verified:
    print("You can proceed")

count = 0

while True:
    response = input("Type 'quit' to exit: ")
    if response.lower() == 'quit':
        break
    count += 1
    print(f"You have entered {count} commands")

print("Loop exited")

# AND operator - both must be True
result1 = True and True   # True
result2 = True and False  # False

# OR operator - at least one must be True
result3 = True or False   # True
result4 = False or False  # False

# NOT operator - inverts the value
result5 = not True        # False
result6 = not False       # True

# Complex expression
is_weekend = True
has_money = True
is_sunny = False

go_out = is_weekend and has_money and (is_sunny or not is_sunny)
print(f"Should go out: {go_out}")

# Numeric comparisons
print(10 > 5)      # True
print(100 >= 100)  # True
print(5 == 5)      # True

# String comparisons
print("hello" == "hello")  # True
print("abc" < "xyz")       # True

# Membership testing
fruits = ["apple", "banana", "orange"]
print("apple" in fruits)  # True

# Type checking
print(isinstance(42, int))  # True

def has_email_shape(text):
    # Teaching example only, not complete email validation.
    return "@" in text and "." in text and len(text) > 5

if has_email_shape("user@example.com"):
    print("Toy shape check passed")

Best practices

• Use True directly in conditions rather than comparing (if is_active: instead of if is_active == True:)
• Choose descriptive boolean variable names that read like questions (is_valid, has_permission, can_access)
• Remember that True is case-sensitive - it must be capitalized in Python
• Avoid redundant comparisons with True/False - the variable itself is already boolean
• Use True in while loops with break conditions for continuous processes
• Leverage True in complex boolean expressions with and, or, not operators for readable logic

Runtime & versions

Python interpreter. Feature availability depends on the language and runtime version used by your project; consult the official reference below.

Related Python documentation

Specifications & further reading

• Boolean type
• Truth value testing