Python Tasks & ML | ΠΠ°Π΄Π°ΡΠΈ ΠΏΠΎ ΠΏΠΈΡΠΎΠ½Ρ ΠΈ ΠΌΠ°ΡΠΈΠ½Π½ΠΎΠΌΡ ΠΎΠ±ΡΡΠ΅Π½ΠΈΡ
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Algorithms, functions, classes, regular expressions, iterators, generators, OOP, exceptions, NumPy, pandas, scikit-learn https://telega.in/c/python_tasks Questions β @dina_ladnyuk
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Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
~(10 ^ ~10) + ~~(100 ^ ~100) + ~~~(1000 ^ ~1000)
ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
chr(ord('c') - ord('a') + ord('b'))ΠΠ°ΠΊΠΎΠ³ΠΎ Π·Π½Π°ΡΠ΅Π½ΠΈΡ Π½Π΅Ρ Π² ΠΊΠΎΡΡΠ΅ΠΆΠ΅, Π²ΠΎΠ·Π²ΡΠ°ΡΠ°Π΅ΠΌΠΎΠΌ sys.exc_info() ?
ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
try:
try:
raise IndexError()
except Exception as E:
raise TypeError() from E
except Exception as E:
raise SyntaxError() from EΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
class Odd(Exception): pass
def check_even(x):
if x % 2:
raise Odd()
else:
return True
try:
result = check_even(6)
print(result, end=' ')
except Odd:
print('ΠΠ΅ΡΠ΅ΡΠ½ΡΠΉ')
else:
print('Π§Π΅ΡΠ½ΡΠΉ')ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
x = 1
try:
1/0
except Exception as x:
print(x)
print(x)ΠΠ°ΠΊ Π² Python Π²ΡΠΉΡΠΈ ΠΈΠ· Π²ΡΠ΅Ρ
Π²Π»ΠΎΠΆΠ΅Π½Π½ΡΡ
ΡΠΈΠΊΠ»ΠΎΠ² ΡΡΠ°Π·Ρ?
ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
def f1():
raise IndexError
def f2():
return
def f3():
raise SyntaxError
counters = []
for func in (f1, f2, f3):
counter = 0
try:
try:
func()
except IndexError:
counter += 1
except SyntaxError:
counter += 1
finally:
counter += 1
counters.append(counter)
print(counters)ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
def g(*args):
return sum([f() if callable(f) else f for f in args])
x = g(lambda: 1, lambda: 2, 3, 4)
print(x)ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
256 >> 7 << 1 << 2 >> 3 >> 1
ΠΠ°ΠΊΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΠΈ Π² ΠΊΠ°ΠΊΠΎΠΌ ΠΌΠΎΠ΄ΡΠ»Π΅ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠ°ΡΡ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΈΠ· ΡΠΊΡΠΏΠΎΠ½Π΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ?
ΠΡΠ±Π΅ΡΠΈΡΠ΅ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΠΉ Π²Π°ΡΠΈΠ°Π½Ρ
Π§ΡΠΎ Π²ΡΠ²Π΅Π΄Π΅Ρ ΠΊΠΎΠ΄?
try:
try:
raise IndexError
except:
pass
finally:
print('1', end='')
finally:
print('2')