TeIAS-PythonCourse/s04_pfc_loops.py at master · einian85/TeIAS-PythonCourse · GitHub

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# -*- coding: utf-8 -*-
"""S04 - PFC - Loops.ipynb

Automatically generated by Colaboratory.

Original file is located at
    https://colab.research.google.com/drive/1Si4ITWlRxvZl0ryxPaq9PkjpA4Xx95qg

# Range
"""

my_range = range(0,10,2)
print(my_range)

list_from_range = list(my_range)
print(list_from_range)

# `range` can only have integer steps
# new_range = range(0,10,.5) # gives error
# to create sth like that, you will need `arange` from `numpy`

"""## Program Flow Control: Loops
`for` loop for a know number of iterations. A `for` loop is used for iterating over a sequence (that is either a `list`, a `tuple`, a `dict`ionary, a `set`, a `range` or a `str`ing).

`while` for unknown number of iterations (conditional)
"""

fruits = ["apple","banana","cherry"]
for f in fruits:
    print(f)

# Print all numbers from 0 to 10 (not 10 itself)
for i in range(0,10):
    print(i)

print(f)
print(i)

# count all 2-digit odd numbers

count = 0

for i in range(10,100):
    if i % 2 == 1:    # i % 2 != 0
        count += 1

print(count)

# You can loop through characters of a string!
for c in "Hello World!":
    print(c)

"""# `break` and `continue` """

fruits = ["apple", "banana", "cherry"]
for x in fruits:
    print(x)
    if x == "banana":
        break

fruits = ["apple", "banana", "cherry"]
for x in fruits:
    if x == "banana":
        break
    print(x)

fruits = ["apple", "banana", "cherry"]
for x in fruits:
    if x == "banana":
        continue
    print(x)

"""`else` in `for` loop"""

for i in range(2,6):
    print(i)
else:
    print("done")

for i in range(1,20):
    if i==10 :
        break
    print(i)
else:
    print("done")

for i in range(1,20):
    if i==10 :
        continue
    print(i)
else:
    print("done")

name = "Majid"
print("My name is ",)
print(name)

name = "Majid"
print("My name is ", end='')
print(name)

# nested loops

for n in range(0,10):
    for x in range(0,10):
        print("*",end='')
    print("")

for n in range(0,10):
    for x in range(n, 10):
        print("*",end='')
    print("")

for n in range(0,10):
    for x in range(0, n+1):
        print("*",end='')
    print("")

"""`while` loops"""

j = int(input())
s = ""
while j>0:
    d = j % 2
    print("this round j=",j,', j%2=',d," next round j=",j//2)
    s = str(d) +s
    j = j // 2
print(s)

"""`else`, `break` and `continue` work for `while` loops too."""