Ishnndis
text = "Ура! Каникулы!!! Не учимся!"
# 1
chr_count = sum(1 for i in text if i == "!")
text = text. replace("!", "")
print("Номер 1")
print(text)
print(chr_count)
# 2
text = text. replace("а", "абвгд")
print("nНомер 2")
print(text)
# 3
text = text + text[::-1]
print("nНомер 3")
print(text)
# 4
text = text[::2]
print("nНомер 4")
print(text)
text = "Ура! Каникулы!!! Не учимся!"
# 1
chr_count = 0
chr_num = 0
for _ in text:
if text[chr_num] == "!":
chr_count += 1
text = text[:chr_num] + text[chr_num+1:]
continue
chr_num += 1
print("Номер 1")
print(text)
print(chr_count)
# 2
chr_num = 0
for i in text:
if text[chr_num] == "а":
text = text[:chr_num+1] + "бвгд" + text[chr_num+1:]
chr_num += 4
chr_num += 1
print("nНомер 2")
print(text)
# 3
new_text = text
for num in range(1, len(text)+1):
new_text += text[-num]
text = new_text
print("nНомер 3")
print(text)
# 4
new_text = ""
for num in range(len(text)):
if num % 2 == 0:
new_text += text[num]
text = new_text
print("nНомер 4")
print(text)
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