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This commit is contained in:
Michael Reber
2019-11-15 12:59:38 +01:00
parent 40a414d210
commit b880c3ccde
6814 changed files with 379441 additions and 0 deletions
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6
python/String/Calculate the length of a string.py Normal file
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def string_length(str1):
count = 0
for char in str1:
count += 1
return count
print(string_length('sadsadsadasd.com'))

11
python/String/Python function to convert a given string to all uppercase if it contains at least 2 uppercase characters in the first 4 characters.py Normal file
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def to_uppercase(str1):
num_upper = 0
for letter in str1[:4]:
if letter.upper() == letter:
num_upper += 1
if num_upper >= 2:
return str1.upper()
return str1
print(to_uppercase('Python'))
print(to_uppercase('PyThon'))

4
python/String/Python function to create the HTML string with tags around the word(s).py Normal file
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def add_tags(tag, word):
return "<%s>%s<!--%s-->" % (tag, word, tag)
print(add_tags('i', 'Python'))
print(add_tags('b', 'Python Tutorial'))

6
python/String/Python function to get a string made of 4 copies of the last two characters of a specified string (length must be at least 2).py Normal file
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def insert_end(str):
sub_str = str[-2:]
return sub_str * 4
print(insert_end('Python'))
print(insert_end('Exercises'))

6
python/String/Python function to get a string made of its first three characters of a specified string.py Normal file
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def first_three(str):
return str[:3] if len(str) > 3 else str
print(first_three('ipy'))
print(first_three('python'))
print(first_three('py'))

5
python/String/Python function to get the first half of a specified stiring of even length.py Normal file
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def string_first_half(str):
return str[: len(str) / 2]
print(string_first_half('Python'))
print(string_first_half('JavaScript'))

6
python/String/Python function to insert a string in the middle of a string.py Normal file
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def insert_sting_middle(str, word):
return str[:2] + word + str[2:]
print(insert_sting_middle('[[]]', 'Python'))
print(insert_sting_middle('{{}}', 'PHP'))
print(insert_sting_middle('<<>>', 'HTML'))

7
python/String/Python function to reverse a string if it's length is a multiple of 4.py Normal file
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def reverse_string(str1):
if len(str1) % 4 == 0:
return ''.join(reversed(str1))
return str1
print(reverse_string('abcd'))
print(reverse_string('python'))

15
python/String/Python program to add a prefix text to all of the lines in a string.py Normal file
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import textwrap
sample_text ='''
Python is a widely used high-level, general-purpose, interpreted,
dynamic programming language. Its design philosophy emphasizes
code readability, and its syntax allows programmers to express
concepts in fewer lines of code than possible in languages such
as C++ or Java.
'''
text_without_Indentation = textwrap.dedent(sample_text)
wrapped = textwrap.fill(text_without_Indentation, width=50)
#wrapped += '\n\nSecond paragraph after a blank line.'
final_result = textwrap.indent(wrapped, '> ')
print()
print(final_result)
print()

5
python/String/Python program to change a given string to a new string where the first and last chars have been exchanged.py Normal file
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def change_sring(str1):
return str1[-1:] + str1[1:-1] + str1[:1]
print(change_sring('abcd'))
print(change_sring('12345'))

2
python/String/Python program to check whether a string starts with specified characters.py Normal file
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string = "w3resource.com"
print(string.startswith("w3r"))

27
python/String/Python program to create a Caesar encryption.py Normal file
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#https://gist.github.com/nchitalov/2f2b03e5cf1e19da1525
def caesar_encrypt(realText, step):
outText = []
cryptText = []
uppercase = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
lowercase = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
for eachLetter in realText:
if eachLetter in uppercase:
index = uppercase.index(eachLetter)
crypting = (index + step) % 26
cryptText.append(crypting)
newLetter = uppercase[crypting]
outText.append(newLetter)
elif eachLetter in lowercase:
index = lowercase.index(eachLetter)
crypting = (index + step) % 26
cryptText.append(crypting)
newLetter = lowercase[crypting]
outText.append(newLetter)
return outText
code = caesar_encrypt('abc', 2)
print()
print(code)
print()

7
python/String/Python program to display a number with a comma separator.py Normal file
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x = 3000000
y = 30000000
print("\nOriginal Number: ", x)
print("Formatted Number with comma separator: "+"{:,}".format(x));
print("Original Number: ", y)
print("Formatted Number with comma separator: "+"{:,}".format(y));
print()

11
python/String/Python program to display formatted text (width=50) as output.py Normal file
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import textwrap
sample_text = '''
Python is a widely used high-level, general-purpose, interpreted,
dynamic programming language. Its design philosophy emphasizes
code readability, and its syntax allows programmers to express
concepts in fewer lines of code than possible in languages such
as C++ or Java.
'''
print()
print(textwrap.fill(sample_text, width=50))
print()

9
python/String/Python program to find the first appearance of the substring 'not' and 'poor' from a given string, if 'bad' follows the 'poor', replace the whole 'not'...'poor' substring with 'good'.py Normal file
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def not_poor(str1):
snot = str1.find('not')
sbad = str1.find('poor')
if sbad > snot:
str1 = str1.replace(str1[snot:(sbad+4)], 'good')
return str1
print(not_poor('The lyrics is not that poor!'))

7
python/String/Python program to format a number with a percentage.py Normal file
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x = 0.25
y = -0.25
print("\nOriginal Number: ", x)
print("Formatted Number with percentage: "+"{:.2%}".format(x));
print("Original Number: ", y)
print("Formatted Number with percentage: "+"{:.2%}".format(y));
print()

6
python/String/Python program to get a single string from two given strings, separated by a space and swap the first two characters of each string.py Normal file
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def chars_mix_up(a, b):
new_a = b[:2] + a[2:]
new_b = a[:2] + b[2:]
return new_a + ' ' + new_b
print(chars_mix_up('abc', 'xyz'))

7
python/String/Python program to print the following floating numbers upto 2 decimal places with a sign.py Normal file
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x = 3.1415926
y = -12.9999
print("\nOriginal Number: ", x)
print("Formatted Number with sign: "+"{:+.2f}".format(x));
print("Original Number: ", y)
print("Formatted Number with sign: "+"{:+.2f}".format(y));
print()

7
python/String/Python program to print the following floating numbers upto 2 decimal places.py Normal file
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x = 3.1415926
y = 12.9999
print("\nOriginal Number: ", x)
print("Formatted Number: "+"{:.2f}".format(x));
print("Original Number: ", y)
print("Formatted Number: "+"{:.2f}".format(y));
print()

7
python/String/Python program to print the following floating numbers with no decimal places.py Normal file
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x = 3.1415926
y = -12.9999
print("\nOriginal Number: ", x)
print("Formatted Number with no decimal places: "+"{:.0f}".format(x));
print("Original Number: ", y)
print("Formatted Number with no decimal places: "+"{:.0f}".format(y));
print()

7
python/String/Python program to print the following integers with zeros on the left of specified width.py Normal file
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x = 3
y = 123
print("\nOriginal Number: ", x)
print("Formatted Number(left padding, width 2): "+"{:0>2d}".format(x));
print("Original Number: ", y)
print("Formatted Number(left padding, width 6): "+"{:0>6d}".format(y));
print()

3
python/String/Python program to remove a newline.py Normal file
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str1='Python Exercises\n'
print(str1)
print(str1.rstrip())

12
python/String/Python program to remove existing indentation from all of the lines in a given text.py Normal file
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import textwrap
sample_text = '''
Python is a widely used high-level, general-purpose, interpreted,
dynamic programming language. Its design philosophy emphasizes
code readability, and its syntax allows programmers to express
concepts in fewer lines of code than possible in languages such
as C++ or Java.
'''
text_without_Indentation = textwrap.dedent(sample_text)
print()
print(text_without_Indentation )
print()

9
python/String/Python program to remove the characters which have odd index values of a given string.py Normal file
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def odd_values_string(str):
result = ""
for i in range(len(str)):
if i % 2 == 0:
result = result + str[i]
return result
print(odd_values_string('abcdef'))
print(odd_values_string('python'))

7
python/String/Python program to remove the nth index character from a nonempty string.py Normal file
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def remove_char(str, n):
first_part = str[:n]
last_pasrt = str[n+1:]
return first_part + last_pasrt
print(remove_char('Python', 0))
print(remove_char('Python', 3))
print(remove_char('Python', 5))

6
python/String/Python program to reverse a string.py Normal file
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def reverse_string(str1):
return ''.join(reversed(str1))
print()
print(reverse_string("abcdef"))
print(reverse_string("Python Exercises."))
print()

16
python/String/Python program to set the indentation of the first line.py Normal file
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import textwrap
sample_text ='''
Python is a widely used high-level, general-purpose, interpreted, dynamic
programming language. Its design philosophy emphasizes code readability,
and its syntax allows programmers to express concepts in fewer lines of
code than possible in languages such as C++ or Java.
'''
text1 = textwrap.dedent(sample_text).strip()
print()
print(textwrap.fill(text1,
initial_indent='',
subsequent_indent=' ' * 4,
width=80,
))
print()

5
python/String/Python program to sort a string lexicographically.py Normal file
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def lexicographi_sort(s):
return sorted(sorted(s), key=str.upper)
print(lexicographi_sort('w3resource'))
print(lexicographi_sort('quickbrown'))

8
python/String/Python program to strip a set of characters from a string.py Normal file
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def strip_chars(str, chars):
return "".join(c for c in str if c not in chars)
print("\nOriginal String: ")
print("The quick brown fox jumps over the lazy dog.")
print("After stripping a,e,i,o,u")
print(strip_chars("The quick brown fox jumps over the lazy dog.", "aeiou"))
print()