# 进行字符串分割 temp_list = [i.split(",") for i in df["Genre"]] # 获取电影的分类 genre_list = np.unique([i for j in temp_list for i in j]) # 增加新的列,创建全为0的dataframe temp_df = pd.DataFrame(np.zeros([df.shape[0],genre_list.shape[0]]),columns=genre_list) 2...
64) or \ (is_linux): available_cpus = list(range(2, logical_cpus, 2)) p.cp...
Click the Show/Hide toggle beside each question to reveal the answer. How do I check the quality of Python code?Show/Hide What are the key characteristics of high-quality Python code?Show/Hide How do you write high-quality Python code?Show/Hide What tools can I use to improve Python...
Here’s a quick list of those categories:Assignment operators Arithmetic operators Comparison operators Boolean or logical operators Identity operators Membership operators Concatenation and repetition operators Bitwise operatorsAll these types of operators take care of specific types of computations and data-...
What is a Python AI Assistant?This Python AI Assistant is an AI-powered tool designed to answer your Python programming queries. Simply enter your question, and you'll receive instant assistance.Advertisement - This is a modal window. No compatible source was found for this media....
管道符号(|) 表示择一匹配,,表示一个“从多个模式中选择其一”的操作。它用于分割不同的正则表达式。 有了这个符号,就能够增强正则表达式的灵活性,使得正则表达式能够匹配多个字符串而不仅仅只是一个字符串。择一匹配有时候也称作并(union)或者逻辑或(logical OR) ...
Rules are very important to solve any problem in Logic Programming. Rules are basically logical conclusion which can express the facts. Following is the syntax of rule − 规则对于解决逻辑编程中的任何问题非常重要。 规则基本上是可以表达事实的逻辑结论。 以下是规则的语法- ...
NumPy 数组便于对大量数据进行高级数学和其他类型的操作。...通常,这样的操作比使用Python的内置序列可能更有效和更少的代码执行。...二、numpy的使用 1、创建ndarray 由python list创建python # 1维数组 a = np.array([1, 2, 3]) print(type(a), a.shape ...
Python Data Types Numeric, String, List, Tuple and Dict data types introduction. Python IO File Operations - Read, Write, Open, Close. Taking input from user and import statement. Python Operators Arithmetic, Comparison, Bitwise, Logical, and Assignment Operators. Learn about the operator precedenc...
Python Data Types Numeric, String, List, Tuple and Dict data types introduction. Python IO File Operations - Read, Write, Open, Close. Taking input from user and import statement. Python Operators Arithmetic, Comparison, Bitwise, Logical, and Assignment Operators. Learn about the operator precedenc...