Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly
Sign up
Appearance settings

Commit b997794

Browse files
additional (advanced ) topic added + Cheatsheet
1 parent 89b4994 commit b997794

Some content is hidden

Large Commits have some content hidden by default. Use the searchbox below for content that may be hidden.

63 files changed

+570
-1
lines changed

‎10. Generators/fibonacci_list.py‎

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
2+
def fib(num):
3+
a = 0
4+
b= 1
5+
li=[]
6+
for i in range(num):
7+
li.append(a)
8+
temp = a
9+
a = b
10+
b = temp + b
11+
print(li)
12+
13+
num = int(input("Enter a number: "))
14+
fib(num)

‎10. Generators/fibonacci_range.py‎

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
2+
def fib(num):
3+
a = 0
4+
b= 1
5+
for i in range(num):
6+
yield a
7+
temp = a
8+
a = b
9+
b = temp + b
10+
11+
num = int(input("Enter a number: "))
12+
13+
for i in fib(num):
14+
print(i)

‎10. Generators/generator.py‎

Lines changed: 31 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,31 @@
1+
2+
# here we are generating our own generator function, just like a range().
3+
4+
def generator_fn(num):
5+
print("check")
6+
#yield
7+
for i in range(num):
8+
print("****")
9+
yield i*2
10+
print("####")
11+
12+
g = generator_fn(3)
13+
print(g)
14+
print(next(g))
15+
print(next(g))
16+
print(next(g))
17+
#print(next(g)) # StopIteration error
18+
print(g)
19+
20+
for item in generator_fn(5):
21+
print(item)
22+
23+
# here it goes to the generator_fn(), gets the 'i' value, pauses the function, until called for the 2nd time,
24+
# and so on, it doesn't store all the no.s in the memory (just the most recent one).
25+
26+
'''
27+
'yield' pauses the function and comes back to it when we do something to it, which is called 'next'.
28+
29+
if there is the keyword 'yield' written inside the function, then python recognises that its a
30+
generator function, and won't run the function until the function is being iterated.
31+
'''

‎10. Generators/our_own_forloop.py‎

Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,11 @@
1+
2+
def my_own_forloop(iterable):
3+
iterator = iter(iterable)
4+
while True:
5+
try:
6+
print(iterator)
7+
print(next(iterator))
8+
except StopIteration:
9+
break
10+
11+
my_own_forloop([1,2,3,4,5])

‎10. Generators/our_own_range.py‎

Lines changed: 27 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,27 @@
1+
2+
class OurOwnRange():
3+
current = 0
4+
def __init__(self,first,last):
5+
self.first = first
6+
self.last = last
7+
8+
def __iter__(self):
9+
return self
10+
11+
def __next__(self):
12+
print("hehehheh")
13+
# if self.current < self.last:
14+
# num = OurOwnRange.current
15+
# OurOwnRange.current += 1
16+
# return num
17+
# raise StopIteration
18+
19+
gen = OurOwnRange(0,10)
20+
print(gen)
21+
22+
for i in gen:
23+
print(i)
24+
25+
'''
26+
loops by default deal with StopIteration error. they have build in functionality to handle them.
27+
'''
Lines changed: 17 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,17 @@
1+
2+
import re
3+
4+
email_pattern = re.compile(r"([a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$)")
5+
check_email = email_pattern.fullmatch('saurabh_1089@gmail.com')
6+
7+
password_patter = re.compile(r"([a-zA-Z0-9@#$%]{8,}$)")
8+
check_password = password_patter.fullmatch('12345678')
9+
10+
if check_email and check_password:
11+
print("Both email and password are correct.")
12+
else:
13+
print("Try again.")
14+
15+
'''
16+
password is also checking for minimum 8 chars
17+
'''
Lines changed: 32 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,32 @@
1+
import re
2+
3+
string = "this is a really cool string really!"
4+
5+
a = re.search('really',string)
6+
print(a)
7+
8+
# the below 4 commands will give error if the searching string does not exist.
9+
print(a.span())
10+
print(a.start())
11+
print(a.end())
12+
print(a.group())
13+
14+
pattern = re.compile('really')
15+
16+
b = pattern.search(string)
17+
c = pattern.findall(string)
18+
19+
pattern = re.compile('this is a really cool string really!')
20+
d = pattern.fullmatch('this is a really cool string really!')
21+
e = pattern.fullmatch('hello this is a really cool string really!') # this should be exact match, otherwise returns none
22+
23+
pattern = re.compile('really')
24+
f = pattern.match('really cool feature') # it starts matching from the first character otherwise returns none
25+
g = pattern.match('yo really')
26+
27+
print(f"b: {b}")
28+
print(f"c: {c}")
29+
print(f"d: {d}")
30+
print(f"e: {e}")
31+
print(f"f: {f}")
32+
print(f"g: {g}")
718 Bytes
Binary file not shown.
696 Bytes
Binary file not shown.
392 Bytes
Binary file not shown.

0 commit comments

Comments
(0)

AltStyle によって変換されたページ (->オリジナル) /