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pag. 49-58
pag. 118

Functions 

How do you define a function in Python?
Can you put a single instruction on multiple lines?
What is the purpose of using lambda function?

Definition 

 
""" Specify the name and the sequence of statements.  
    Later, you can call the function by name.  
    Split a single instruction on multple lines with backslash.
"""

def f(a): 
    return a%2

def h(x):
    return

print(f(3))
print(h("2"))

print("Hello " + \
    "World")

"""
    1
    None
    Hello World
"""

Import 

 
""" To use a function from a module, you have to import it.
    When you save your scripts don't use modules names like math, sys, csv.
"""

import math

print( math.pi )
print( math.sin(math.pi/2) )

"""
    3.141592653589793
    1.0
"""

Local variable 

 
""" A local variable is destroyed after the function is called.
    To modify a global variable from within a function, use global statement.
"""

def f(a, b):
    c = a + b
    return c

n = 0
def h():
    global n 
        # Look Here

    for i in range(10):
        n = i
    return n

print(f(3,4))
print(h())

try:
    print(c)
except Exception as e:
    print(e)

"""
    7
    9
    name 'c' is not defined
"""



  Last update: 122 days ago