Check out these 50 awesome Python Tips that will supercharge your coding skills and make your development process a breeze. Unleash the full potential of Python’s versatility and turbocharge your efficiency.
Table of contents
Python Tips and Tricks
These Python tricks can help you write programs with ease and speed.
Python Tips 01 – 10
Python Tip 01
Use shebang #!/usr/bin/env python at the beginning of the script to specify the interpreter to use.
Python Tip 02
Import necessary modules using the import statement. For example, import pandas as pd imports the pandas module and assigns the alias pd.
Python Tip 03
Use regular expressions (regex) by importing the re module to perform pattern matching and manipulation.
Python Tip 04
Import the json module to work with JSON data.
Python Tip 05
Use open() function to open a file. For example, open(infile, “r”) opens the file named infile in read mode.
Python Tip 06
Use the with statement to ensure proper handling of resources by automatically closing files after use.
Python Tip 07
Use the read() method to read the contents of a file into a variable.
Python Tip 08
Use variables to store intermediate results. For example, txt=”” initializes an empty string variable.
Python Tip 09
Use a for loop to iterate over the lines of a file. For example, for line in read_obj: loops through each line in the file.
Python Tip 10
Use the join() method to concatenate all lines of a file into a single string. For example, txt=””.join(line) concatenates all lines into the txt variable.
Python Tips 11 – 20
Python Tip 11
Use an integer variable as an index to access specific characters in a string. For example, txt[0+k:chunk+k] extracts a chunk of characters.
Python Tip 12
Use conditional statements, such as if and else, to perform different actions based on a condition. For example, if k==0: performs a specific action if the condition is true.
Python Tip 13
Use the re.sub() function to replace substrings using a regular expression. For example, re.sub(“/”, “”, line1) replaces all occurrences of / with an empty string in line1.
Python Tip 14
Use the partition() method to split a string into three parts based on a separator. For example, line2.partition(‘|’) splits line2 into three parts using | as the separator.
Python Tip 15
Use the strip() method to remove leading and trailing whitespace characters from a string. For example, line3.strip() removes leading and trailing whitespace from line3.
Python Tip 16
Use the split() method to split a string into a list of substrings based on a delimiter. For example, line3.strip().split(‘,’) splits line3 into a list using , as the delimiter.
Python Tip 17
Use list comprehensions to manipulate lists. For example, [x[i].replace(“|”,””) for i in range(len(x))] replaces | with an empty string for each element in the list x.
Python Tip 18
Use dictionary comprehension to create a dictionary from two lists. For example, dict(zip(c1, x1)) creates a dictionary where the elements of c1 are keys and the elements of x1 are values.
Python Tip 19
Use the dumps() method from the json module to convert a dictionary into a JSON string. For example, json.dumps(d, separators=(‘,’, ‘: ‘)) converts the dictionary d into a JSON string using , as the item separator and : as the key-value separator.
Python Tip 20
Use the len() function to get the length of a string.
Python Tips 21 – 30
Python Tip 21
Use string concatenation to build JSON-like strings. For example, ‘\n”‘+line1[:10]+’”‘+ ” :\n” constructs a JSON-like string.
Python Tip 22
Use the write() method to write data to a file. For example, write_obj.write(begin) writes the string begin to the file.
Python Tip 23
Use the a mode when opening a file to append data to the file. For example, open(dummy_file, “a”) opens the file dummy_file in append mode.
Python Tip 24
Use a while loop to iterate over a sequence until a certain condition is met. For example, while k<=len(txt): continues the loop until k exceeds the length of txt.
Python Tip 25
Use the json module to work with JSON data. For example, json.loads() parses a JSON string into a Python object, and json.dumps() converts a Python object into a JSON string.
Python Tip 26
Use the + operator to concatenate strings.
Python Tip 27
Use the escape sequence \n to create a new line.
Python Tip 28
Use double quotes (“) to define string literals. For example, “dummy.json”.
Python Tip 29
Use single quotes (‘) to wrap string literals within a larger string. For example, ‘”\n” + line1[:10] + ‘” + ” :\n”‘.
Python Tip 30
Use the close() method to close a file after use. For example, read_obj.close() and write_obj.close() close the read_obj and write_obj files, respectively.
Python Tips 31 – 40
Python Tip 31
Use comments to explain code functionality. For example, # After reading, writes to txt file explains the purpose of the following block of code.
Python Tip 32
Use meaningful variable names to improve code readability. For example, using variables like infile, txt, begin, dummy_file, etc.
Python Tip 33
Use indentation to indicate code blocks. For example, the code inside the with block is indented.
Python Tip 34
Use the join() method to efficiently concatenate a list of strings into a single string. For example, “”.join(line) concatenates all lines into txt.
Python Tip 35
Use the write() method to write data to a file. For example, write_obj.write(h1 + z) writes the concatenation of h1 and z to the file.
Python Tip 36
Use the zip() function to iterate over multiple sequences simultaneously. For example, zip(c1, x1) pairs elements from c1 and x1 to create tuples.
Python Tip 37
Use the partition() method in combination with indexing to extract specific parts of a string. For example, line2.partition(‘|’)[0] extracts the part of line2 before the first occurrence of |.
Python Tip 38
Use the strip() method to remove unwanted characters from the beginning and end of a string. For example, line3.strip() removes leading and trailing whitespace from line3.
Python Tip 39
Use the replace() method to replace specific characters or substrings in a string. For example, x[i].replace(“|”,””) replaces | with an empty string in x[i].
Python Tip 40
Use the join() method with a specified separator to concatenate a list of strings into a single string. For example, ‘,’.join(c1) joins all elements of c1 using , as the separator.
Python Tips 41 – 50
Python Tip 41
Use the range() function with the len() function to create a sequence of numbers from 0 to the length of a sequence. For example, range(len(x)) generates numbers from 0 to len(x) – 1.
Python Tip 42
Use the isinstance() function to check the type of an object. For example, isinstance(x, int) checks if x is an integer.
Python Tip 43
Use the json module to work with JSON data. For example, json.dumps(d, separators=(‘,’, ‘: ‘)) converts the dictionary d into a JSON string.
Python Tip 44
Use the > operator to compare two values. For example, k>0 checks if k is greater than 0.
Python Tip 45
Use the += operator to increment a variable by a specified value. For example, k += chunk increases the value of k by chunk.
Python Tip 46
Use the len() function to get the length of a string, list, or any sequence. For example, len(txt) returns the length of the string txt.
Python Tip 47
Use the < operator to compare two values. For example, k<=len(txt) checks if k is less than or equal to the length of txt.
Python Tip 48
Use the [] operator to access specific elements of a list or characters of a string. For example, c[i] accesses the element at index i in the list c.
Python Tip 49
Use the [] operator with slicing to extract a portion of a string or list. For example, line1[:10] extracts the first 10 characters from line1.
Python Tip 50
Use the : character to specify a range in slicing. For example, line1[10:len(line1)] extracts all characters from index 10 to the end of line1.
Conclusion
Use sparsely these Python tips and tricks in your programs to improve quality and write quickly.
References
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