EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but • Exact or frozen spec: a spec where both the version and build fields are constrained with == operators (exact match). 226 Chapter 6. Developer guide conda Documentation, Release 23.3.1.post2+bdcba5dd0 tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities (>, <, etc.) and fuzzy matches (*something*). • Version-only spec:

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities IndexedSet('freecreditreport.com') >>> ''.join(fcr[:fcr.index('.')]) 'frecditpo' Standard set operators and interoperation with set are all supported: >>> fcr & set('cash4gold.com') IndexedSet(['c',

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities IndexedSet('freecreditreport.com') >>> ''.join(fcr[:fcr.index('.')]) 'frecditpo' Standard set operators and interoperation with set are all supported: >>> fcr & set('cash4gold.com') IndexedSet(['c',

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities IndexedSet('freecreditreport.com') >>> ''.join(fcr[:fcr.index('.')]) 'frecditpo' Standard set operators and interoperation with set are all supported: >>> fcr & set('cash4gold.com') IndexedSet(['c',

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities IndexedSet('freecreditreport.com') >>> ''.join(fcr[:fcr.index('.')]) 'frecditpo' Standard set operators and interoperation with set are all supported: >>> fcr & set('cash4gold.com') IndexedSet(['c',

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities IndexedSet('freecreditreport.com') >>> ''.join(fcr[:fcr.index('.')]) 'frecditpo' Standard set operators and interoperation with set are all supported: >>> fcr & set('cash4gold.com') IndexedSet(['c',

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities

EXAMPLE: 1.0|1.4* matches 1.0, 1.4 and 1.4.1b2, but not 1.2. – <, >, <=, >=, == and != are relational operators on versions, which are compared using PEP-440. For example, <=1.0 matches 0.9, 0.9.1, and 1.0, but are constrained with == operators (exact match). • Fully constrained or tight spec: a spec where both version and build are populated, but not necessarily with equality operators. It can also be inequalities