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Python String Practice Problems
Write a Python program to reverse the order of words.
"string problems"
problems string
" ".join(reversed(text.split())).print(" ".join(reversed("string problems".split())))problems string
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Write a Python program to add “ly” if a string ends with “ing”, otherwise add “ing”.
"winning", "play"
winningly playing
endswith("ing") decides which suffix to add.for word in ["winning", "play"]: print(word + ("ly" if word.endswith("ing") else "ing"))winningly playing
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Write a Python program to add “ing” at the end of a string.
"xyz"
xyzing
print("xyz" + "ing")xyzing
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Write a Python program to check whether a string contains only 0 and 1.
"01011100", "0120"
01011100 yes 0120 no
for s in ["01011100", "0120"]: print(s, "yes" if s and set(s) <= {"0", "1"} else "no")01011100 yes 0120 no
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Write a Python program to remove the character at index k.
k = 2, "sqatools"
sqtools
text, k = "sqatools", 2print(text[:k] + text[k + 1:])sqtools
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Write a Python program to accept a string only if it contains vowels only.
"python", "aaieou"
python not accepted aaieou accepted
all(ch in "aeiou" for ch in text).for text in ["python", "aaieou"]: print(text, "accepted" if text and all(ch in "aeiou" for ch in text.lower()) else "not accepted")python not accepted aaieou accepted
text and ... rejects the empty string, for which all() would return True.
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Write a Python program to get the length of a string, not counting spaces.
"sqatools is best for learning python"
31
len().text = "sqatools is best for learning python"print(len(text.replace(" ", "")))31
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Write a Python program to list all permutations of a string with a built-in function.
"CDE"
['CDE', 'CED', 'DCE', 'DEC', 'ECD', 'EDC']
itertools.permutations and join each tuple.from itertools import permutationsprint(["".join(p) for p in permutations("CDE")])['CDE', 'CED', 'DCE', 'DEC', 'ECD', 'EDC']
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Write a Python program to split a string and join it with “-“.
"Sqatools is best"
Sqatools-is-best
"-".join(text.split()).print("-".join("Sqatools is best".split()))Sqatools-is-best
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Write a Python program to insert a space before every capital letter.
"SqaTools pyThon"
' Sqa Tools py Thon'
re.sub to put a space before each uppercase letter.import reprint(repr(re.sub(r"([A-Z])", r" \1", "SqaTools pyThon")))' Sqa Tools py Thon'
\1 puts the captured capital back after the inserted space.
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