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Python practice problems help beginners to become experts in a python programming language with a small amount of practice effort.
Write a Python program to print the characters at even index positions (0, 2, 4, …).
"sqatools"
saol
print("sqatools"[::2])saol
Starting at 0 with step 2 takes indexes 0, 2, 4 and 6.
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Write a Python program to combine two strings into one.
"abc", "def"
abcdef abcdef abcdef
+.a, b = "abc", "def"print(a + b, f"{a}{b}", "".join([a, b]))abcdef abcdef abcdef
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Write a Python program to count how often each character appears in a string.
"sqatools"
{'s': 2, 'q': 1, 'a': 1, 't': 1, 'o': 2, 'l': 1}
TrueCounter.text = "sqatools"freq = {}for ch in text: freq[ch] = freq.get(ch, 0) + 1print(freq) from collections import Counterprint(Counter(text) == freq){'s': 2, 'q': 1, 'a': 1, 't': 1, 'o': 2, 'l': 1}
Trueget(ch, 0) handles the first time a character appears.
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Write a Python program to calculate the length of a string.
"python"
6
len().print(len("python"))6
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Write a Python program to reverse each word of a string, keeping the word order.
"sqatools python"
slootaqs nohtyp
text = "sqatools python"print(" ".join(w[::-1] for w in text.split()))slootaqs nohtyp
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Check whether a given string is a palindrome.
"sqatoolssqatools", "racecar"
sqatoolssqatools is not a palindrome racecar is a palindrome
for s in ["sqatoolssqatools", "racecar"]: print(s, "is a palindrome" if s == s[::-1] else "is not a palindrome")sqatoolssqatools is not a palindrome racecar is a palindrome
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Write a Python program to find the smallest and largest word in a string.
"Learning is a part of life and we strive"
a Learning
min and max with key=len.words = "Learning is a part of life and we strive".split()print(min(words, key=len), max(words, key=len))a Learning
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Write a Python program to find the words that appear in both strings, ignoring punctuation.
"Very Good Morning, How are You" and "You are a Good student, keep it up"
['Good', 'You', 'are']
s1 = "Very Good Morning, How are You"s2 = "You are a Good student, keep it up"w1 = {w.strip(",.") for w in s1.split()}w2 = {w.strip(",.") for w in s2.split()}print(sorted(w1 & w2))['Good', 'You', 'are']
strip(",.") removes punctuation stuck to a word, such as “Morning,”.
& keeps the words present in both sets.
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Write a Python program to find the longest word written in capital letters.
"Learning PYTHON programming is FUN"
PYTHON
isupper(), then take the longest.text = "Learning PYTHON programming is FUN"caps = [w for w in text.split() if w.isupper()]print(max(caps, key=len) if caps else None)PYTHON
The conditional expression avoids an error when no word is in capitals.
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Write a Python program to remove every character that is not a letter or digit.
"Prog^ra*m#ming", "Py(th)#@&on Pro$*#gram"
Programming PythonProgram
for text in ["Prog^ra*m#ming", "Py(th)#@&on Pro$*#gram"]: print("".join(ch for ch in text if ch.isalnum()))Programming PythonProgram
Spaces are not alphanumeric either, so “Py… Pro…” becomes one word, matching the expected output.
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